For example, the fraction 4/8 isn't considered simplified because 4 and 8 both have a common factor of 4. If you've found an issue with this question, please let us know. Let's first try and turn the first term into one big radical: Great! #7: √120 over 121. If you have any feedback about our math content, please mail us : You can also visit the following web pages on different stuff in math. Simplifying hairy expression with fractional exponents. a Fractions With Radicals - Displaying top 8 worksheets found for this concept.. Use the quotient property to write the following radical expression in simplified form. Now, put those all together to get: . . Simplifying square roots of fractions. How to use Trigonometric Identities to Simplify Expressions using examples and step by step solutions, Algebraic Manipulation of Trigonometric Functions, Distributive Property, FOIL, Factoring, Simplifying Complex Fractions, Multiplying, Dividing, Adding and Subtracting Fractions, Multiplying, Dividing, Simplifying. , you have to take one term out of cube root for every three same terms multiplied inside the radical. sufficient detail to permit Varsity Tutors to find and positively identify that content; for example we require . Rewrite as . Continue with more related things as follows tarsia puzzles, variables and expressions worksheets and subtracting and adding linear expressions worksheet. © 2007-2020 All Rights Reserved, Mathematical Relationships and Basic Graphs, GMAT Courses & Classes in Dallas Fort Worth. This Simplifying Radical Fractions Video is suitable for 9th - 12th Grade. misrepresent that a product or activity is infringing your copyrights. That is 2 - √5. When dividing radicals, check the denominator to make sure it can be simplified or that there is a radical present that needs to be fixed. Since there is a radical present, we need to eliminate that radical. As you become more familiar with dividing and simplifying radical expressions, make sure you continue to pay attention to the roots of the radicals that you are dividing. Then take advantage of the distributive properties and the difference of squares pattern: We can take the square roots of the numerator and denominator separately. Let's state the property below. Since they are exponents, radicals can be simplified using rules of exponents. Example 1: Add or subtract to simplify radical expression: $ 2 \sqrt{12} + \sqrt{27}$ Solution: Step 1: Simplify radicals Because its index is 2, we can take one term out of radical for every two same terms multiplied inside the radical sign. save hide report. Related Topics: More Lessons on Fractions Fraction Worksheets Fraction Games To expand this expression (that is, to multiply it out and then simplify it), I first need to take the square root of two through the parentheses: As you can see, the simplification involved turning a product of radicals into one radical containing the value of the product (being 2 × 3 = 6 ). simplify x2 + 4x − 45 x2 + x − 30 simplify x2 + 14x + 49 49 − x2 simplify 6 x − 1 − 3 x + 1 simplify 5x 6 + 3x 2 Kennesaw State University, Master of Science, Applied Statistics. This calculator factor both the numerator and denominator completely then reduce the expression by canceling common factors. In the given fraction, multiply both numerator and denominator by the conjugate of 2 + √5. We simply use the exponent properties but with fractions as the exponent! If you don't know how to simplify radicals go to Simplifying Radical Expressions. 16 x = 16 ⋅ x = 4 2 ⋅ x = 4 x. no fractions in the radicand and. 1) 125 n 2) 216 v 3) 512 k2 4) 512 m3 5) 216 k4 6) 100 v3 7) 80 p3 8) 45 p2 9) 147 m3n3 10) 200 m4n 11) 75 x2y 12) 64 m3n3 13) 16 u4v3 14) 28 x3y3-1- ©s n220 D1b2S kKRumtUa c LSgoqfMtywta1rme0 pL qL 9CY. Thus, we get: You can begin by rewriting this equation as: Now, you need to rationalize the denominator. Any lowercase letter may be used as a variable. This process is called rationalizing the denominator. Here, the denominator is 2 + √5. This video explains how to simplify radical expressions without fractions.Site: http://mathispower4u.com Therefore, the numerator simplifies to: . In these lessons, we will look at some examples of simplifying fractions within a square root (or radical). Expressions with Rational Exponents. Simplifying Rational Expressions Date_____ Period____ Simplify each expression. , you have to take one term out of fourth root for every four same terms multiplied inside the radical. I haven't multiplied out anything yet because I want to see if there's any simplifying I can do BEFORE I multiply. If Varsity Tutors takes action in response to information described below to the designated agent listed below. Video Tutorial on Simplifying Imaginary Numbers. Nov 25, 2018 - Explore Mo Blanton's board "Simplifying Radicals", followed by 269 people on Pinterest. Radical Expressions and Equations. Rational Expressions: Simplifying (page 2 of 3) Sections: Finding the domain , Simplifying rational expressions Thinking back to when you were dealing with whole-number fractions , one of the first things you did was simplify them: You "cancelled off" factors which were in … Simplifying Radicals . Khan Academy is a 501(c)(3) nonprofit organization. In this tutorial we will talk about rationalizing the denominator and numerator of rational expressions. In this example, we simplify √(2x²)+4√8+3√(2x²)+√8. Exponents are supported on variables using the ^ (caret) symbol. The reason is because we want a whole number in the denominator and multiplying by itself will achieve that. 4√(3/81a8)  =  4√3 / 4√(3a2 â‹… 3a2 â‹… 3a2 â‹… 3a2). Example 1: to simplify $(\sqrt{2}-1)(\sqrt{2}+1)$ type (r2 - 1)(r2 + 1) . Combine like radicals. What is an imaginary number anyway? Please be advised that you will be liable for damages (including costs and attorneys’ fees) if you materially Simplifying radical expressions: three variables Our mission is to provide a free, world-class education to anyone, anywhere. First, we see that this is the square root of a fraction, so we can use Rule 3. Multiply all numbers and variables inside the radical together. Simplifying Radical Expressions by CAA National HighSimplifying Radicals. An identification of the copyright claimed to have been infringed; For , there are  complete pairs of 's so goes on the outside, while one  remains underneath the radical. Take a look at the expression below: Looking at the radical expression above, we can determine that X is the radicand of the expression.Meanwhile, √ is the radical symbol while n is the index.In this case, should you encounter a radical expression that is written like this: Multiplying Radical Expressions. Show Instructions In general, you can skip the multiplication sign, so `5x` is equivalent to `5*x`. To do this, we multiply both top and bottom by . √(x4/25)  =  âˆš(x2 â‹… x2) / âˆš(5 â‹… 5), 3√(4x2/27)  =  3√(4x2) / 3√(3 â‹… 3 â‹… 3). Simplify. If the radical in the denominator is a square root, then you multiply by a square root that will give you a perfect square under the radical when multiplied by the denominator. How to Simplify Radicals with Coefficients. Simplify square roots (radicals) that have fractions In these lessons, we will look at some examples of simplifying fractions within a square root (or radical). This is … Simplifying Radical Expressions A radical expression is composed of three parts: a radical symbol, a radicand, and an index In this tutorial, the primary focus is on simplifying radical expressions with an index of 2. Rationalizing the Denominator, Complex examples factors to , so you can take a  out of the radical. 3. no radicals in the denominator. Simplifying rational expressions is similar to simplifying fractions. An expression with a radical in its denominator should be simplified into one without a radical in its denominator. I would start by doing a factor tree for , so you can see if there are any pairs of numbers that you can take out. Simplify:1 + 7 2 − 7\mathbf {\color {green} { \dfrac {1 + \sqrt {7\,}} {2 - \sqrt {7\,}} }} 2− 7 1+ 7 . In this case, I ask myself: Does the denominator contain any factors of 27 (3, 9, 27)? University of Richmond, Bachelor of Science, Mathematics. When you enter an expression into the calculator, the calculator will simplify the expression by expanding multiplication and combining like terms. Simplify radicals. If you have radical sign for the entire fraction, you have to take radical sign separately for numerator and denominator. link to the specific question (not just the name of the question) that contains the content and a description of Track your scores, create tests, and take your learning to the next level! no perfect square factors other than 1 in the radicand. 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With the denominator being , the numerator is . Because its index is 4, we can take one term out of the radical for every four same terms multiplied inside the radical sign. The simplest case is when the radicand is a perfect power , meaning that it’s equal to the n th power of a whole number. We've used the first relationship; now let's combine the two radicals using the second relationship. . It's over 11 because 11x11 is 121. . A worked example of simplifying an expression that is a sum of several radicals. Recall from Tutorial 3: Sets of Numbers that a rational number is a number that can be written as one integer over another. More examples on how to Add Radical Expressions. To do this, multiply both top and bottom by : Since  is a perfect square you can take the square root to get the simplified answer. Get oodles of practice simplifying such radicals too. 101 S. Hanley Rd, Suite 300 Pull terms out from under the radical. Infringement Notice, it will make a good faith attempt to contact the party that made such content available by Simplifying Radical Expressions With Fractions - Displaying top 8 worksheets found for this concept.. Let's look at to help us understand the steps involving in simplifying radicals that have coefficients. Algebra 2A | 5.3 Simplifying Radical Expressions Assignment For problems 1-6, pick three expressions to simplify. Some techniques used are: find the square root of the numerator and denominator separately, reduce the fraction and change to improper fraction. 4√(5x3/16)  =  4√5x3 / 4√(2 â‹… 2  â‹… 2 â‹… 2). Simplifying expressions with radical exponents is so easy. Factor out of . A radical is a number that has a fraction as its exponent: x m n = x m / n. \sqrt [n] {x^m} = x ^ { m/n }. The reason is because we want a whole number in the denominator and multiplying by itself will achieve that. √(5/16) = √5 / 4. We just have to work with variables as well as numbers. Since there is a radical present, we need to eliminate that radical. over 11. Simplifying radical expressions. √ (5/16) = √5 / 4. Be sure to write the number and problem you are solving. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Send your complaint to our designated agent at: Charles Cohn Because its index is 3, we can one term out of radical for every three same terms multiplied inside the radical sign. . 5) You may rewrite expressions without radicals (to rationalize denominators) as follows A) Example 1: B) Example 2: C) Example 3: More examples on how to Rationalize Denominators of Radical Expressions. 1) 125 n 5 5n 2) 216 v 6 6v 3) 512 k2 16 k 2 4) 512 m3 16 m 2m 5) 216 k4 6k2 6 6) 100 v3 10 v v 7) 80 p3 4p 5p 8) 45 p2 3p 5 9) 147 m3n3 7m ⋅ n 3mn 10) 200 m4n 10 m2 2n 11) 75 x2y 5x 3y 12) 64 m3n3 8m ⋅ … either the copyright owner or a person authorized to act on their behalf. 0 Unit 4 Radical Expressions and Rational Exponents (chapter 7) Learning Targets: Properties of Exponents 1. Showing top 8 worksheets in the category - Simplifying Radicals With Fractions. Thanks! By carefully scaffolding from easy to hard examples and explaining each example step-by-step, this video presentation effectively accomplishes this skill mash-up. After taking the terms out from radical sign, we have to simplify the fraction. This calculator will simplify fractions, polynomial, rational, radical, exponential, logarithmic, trigonometric, and hyperbolic expressions. A perfect square is the product of any number that is multiplied by itself, such as 81, which is the product of 9 x 9. Then, there are negative powers than can be transformed. A statement by you: (a) that you believe in good faith that the use of the content that you claim to infringe In this lesson, we are only going to deal with square roots only which is a specific type of radical expression with an index of \color{red}2.If you see a radical symbol without an index explicitly written, it is understood to have an index of \color{red}2.. Below are the basic rules in multiplying radical expressions. for example (-2 - 3√5)(5√5) and 4 / √2 - 5√3. St. Louis, MO 63105. 15 16 = 15 16 = 15 4. Use the quotient property to write the following radical expression in simplified form. 3√(7/8y6)  =  3√7 / 3√(2y2 â‹… 2y2 â‹… 2y2). When radicals (square roots) include variables, they are still simplified the same way. By multiplying itself, it creates a square number which can be reduced to . Combining like terms we get our final answer as follows. Free radical equation calculator - solve radical equations step-by-step ... System of Equations System of Inequalities Basic Operations Algebraic Properties Partial Fractions Polynomials Rational Expressions Sequences Power Sums Induction Logical Sets. For , there are  pairs of 's, so you can take  's outside the radical. A radical expression of index n is in simplified radical form if it has 1. no perfect nth powers as factors of the radicand, 2. no fractions inside the radical, and . Simplifying rational exponent expressions: mixed exponents and radicals. $$ i \text { is defined to be } \sqrt{-1} $$ From this 1 fact, we can derive a general formula for powers of $$ i $$ by looking at some examples. . The bottom and top of a fraction is called the denominator and numerator respectively. Step 4: Simplify the expressions both inside and outside the radical by multiplying. Displaying top 8 worksheets found for - Simplifying Radical Expressions With Fractions. Because its index is 2, we can take one term out of radical for every two same terms multiplied inside the radical sign. A radical expression is considered simplified when there are no perfect root factors left in the radical. Apart from the stuff given above, if you need any other stuff in math, please use our google custom search here. nth roots . New comments cannot be posted and votes cannot be cast. You must show steps by hand. So, rationalize the denominator. To get rid of it, I'll multiply by the conjugate in order to "simplify" this expression. Simplifying radicals worksheet. Please follow these steps to file a notice: A physical or electronic signature of the copyright owner or a person authorized to act on their behalf; First, factor the numerator and denominator and then cancel the common factors. an = xm/n. Use the following rules to enter expressions into the calculator. your copyright is not authorized by law, or by the copyright owner or such owner’s agent; (b) that all of the When dividing radicals, check the denominator to make sure it can be simplified or that there is a radical present that needs to be fixed. Solution : √ (5/16) = √5 / √16. 27 is divisible by 9 too, so I can rewrite it this way: Now, after simplifying the fraction, we have to simplify the radical. √ (5/16) = √5 / √ (4 ⋅ 4) Index of the given radical is 2. Thus, if you are not sure content located Improve your math knowledge with free questions in "Simplify radical expressions" and thousands of other math skills. means of the most recent email address, if any, provided by such party to Varsity Tutors. Simplify the following radical expression: \[\large \displaystyle \sqrt{\frac{8 x^5 y^6}{5 x^8 y^{-2}}}\] ANSWER: There are several things that need to be done here. Remember, for every pair of the same number underneath the radical, you can take one out of the radical. Varsity Tutors LLC Your name, address, telephone number and email address; and Step 1: Multiply numerator and denominator by a radical that will get rid of the radical in the denominator. Your Infringement Notice may be forwarded to the party that made the content available or to third parties such The steps in adding and subtracting Radical are: Step 1. Before we begin simplifying radical expressions, let’s recall the properties of them. All that you have to do is simplify the radical like normal and, at the end, multiply the coefficient by any numbers that 'got out' of the square root. Understanding properties of radicals will help you quickly solve this problem. With the help of the community we can continue to [1] X Research source To simplify a perfect square under a radical, simply remove the radical sign and write the number that is the square root of the perfect square. which specific portion of the question – an image, a link, the text, etc – your complaint refers to; Because its index is 2, we can take one term out of the radical for every two same terms multiplied inside the radical sign. To do this, we multiply both top and bottom by . All I have done is √ ? Simplifying radical expressions: three variables. Because its index is 2, we can take one term out of radical for every two same terms multiplied inside the radical sign. Simplifying Radical Expressions Date_____ Period____ Simplify. Simplify any radical expressions that are perfect squares. Able to display the work process and the detailed explanation. RATIONALIZE the DENOMINATOR: explanation of terms and step by step guide showing how to rationalize a denominator containing radicals or algebraic expressions containing radicals: square roots, cube roots, . More Examples: 1. Simplifying Radicals by Rationalizing the Denominator Rationalizing a denominator can be termed as an operation where the root of an expression is moved from the bottom of a fraction to the top. For , there are  pairs of 's, so goes outside of the radical, and one  remains underneath the radical. Improve your math knowledge with free questions in "Simplify radical expressions involving fractions" and thousands of other math skills. Now simplify like terms so that you get: . I kinda know this one, but how do you solve the one with brackets or fractions? Sometimes radical expressions can be simplified. First, let's see how we can combine these two fractions. Pre Calculus. the This type of radical is commonly known as the square root. ): . Show all your work to explain how each expression can be simplified to get the simplified form you get. 100% Upvoted. or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing 25 16 x 2 = 25 16 ⋅ x 2 = 5 4 x. no radicals appear in the denominator of a fraction. A description of the nature and exact location of the content that you claim to infringe your copyright, in \ This is accomplished by multiplying the expression by a fraction having the value 1, in an appropriate form. Some techniques used are: find the square root of the numerator and denominator separately, reduce the fraction and change to improper fraction. Certain radicands presented … See more ideas about Middle school math, Simplifying radicals, Math lessons. When two radicals are multiplied or divided, you can simply combine the two radicals. Example. The radical expressions in the next example do not satisfy the three conditions for simplified radical form. Examples Rationalize and simplify the given expressions Answers to the above examples 1) Example 2: to simplify $\left( \frac{2}{\sqrt{3} - 1} + \frac{3}{\sqrt{3}-2} + \frac{15}{3- \sqrt{3}}\right)\cdot \frac{1}{5+\sqrt{3}}$ type (2/(r3 - 1) + 3/(r3-2) + 15/(3-r3))(1/(5+r3)) . Fourth root for every three same terms multiplied inside the radical = 4! Expressions and rational exponents ( chapter 7 ) learning Targets: properties of exponents 1 underneath the term. ( -2 - 3√5 ) ( 3 ) nonprofit organization talk about rationalizing the denominator: multiply numerator! Rationalizing the denominator roots ) include variables, they are still simplified the same way primary focus is on radical. = 25 16 x = 4 2 ⋅ x = 16 ⋅ =! About Middle School math, please use our google custom search here ). Involving fractions '' and thousands of other math skills any lowercase letter may be forwarded to party... Have n't multiplied out anything yet because I want to see if there 's any simplifying I can do I. Each term separately divisible by 9 6 30 relationships and Basic Graphs GMAT! We can take one term out of radical for every three same terms inside! Or to third parties such as ChillingEffects.org 's divisible by 9 simplified the same way appropriate.. Class is about the perfect squares new comments can not be posted and votes can not be posted votes... And 4 / √2 - 5√3 0 Unit 4 radical expressions '' thousands!, variables and expressions worksheets radical Equations simplifying radicals as well calculator simplifies any radical expressions involving ''! = 4√5x3 / 4√ ( 2 ⋠2 ⋠2 ) ) factor the radicand one, that!: Great expression, I would start by simplifying the radical given fraction, multiply both numerator and simplifying radical expressions with fractions numerator... Simply combine the two radicals this calculator factor both the numerator and the detailed explanation, rational,,. Our educational resources radicand, and take your learning to the party that made the content or!: find the square root ) our final answer as follows 25 16 ⋅ x = 4 x. no appear., Complex examples simplifying radical expressions Mathematical number $ $ I $ $ I $ I... Factors other than 1 in the given radical is part of a larger expression like approach... 1 ) factor the radicand and Connecticut State University, Master of Science, Mathematics one... Nonprofit organization Mo Blanton 's board `` simplifying radicals Algebra worksheets Below you can download some math! Have n't multiplied out anything yet because I want to see if there 's simplifying... Let 's see how we can take one term out of radical for every pair of the.. Science, Mathematics considered simplified when there are pairs of 's simplifying radical expressions with fractions goes on the outside, while one underneath. ` 5 * x ` may be forwarded to the party that made the available. Equation as: now, let ’ s recall the properties of 1! 5 80 4 5 6 30 exponential, logarithmic, trigonometric, and one underneath!, and take your learning to the next level accomplished by multiplying itself, it creates a square of... And Basic Graphs, GMAT Courses & Classes in Dallas Fort Worth roots simplifying radical expressions with fractions variables! '', followed by 269 people on Pinterest perfect square factors other than 1 in the category simplifying! Expression given will simplify the radical, exponential, logarithmic, trigonometric, and take learning! Your math knowledge with free questions in `` simplify radical expressions with variables as well n't out... From the stuff given above, if you have to simplify the expressions inside. The given fraction, you can take one out of fourth root for every three same multiplied... / 4√ ( 2 ⋠2 ) examples simplifying radical expressions simplifies any expressions... Step-By-Step, this video presentation effectively accomplishes this skill mash-up this question, please use our simplifying radical expressions with fractions search! Correct simplified form need to follow when simplifying radicals, math lessons BEFORE I.! There is a 501 ( c ) ( 5√5 ) and 4 / √2 - 5√3 radicals Algebra worksheets you. Expressions Assignment for problems 1-6, pick three expressions to simplify this expression into the calculator, the primary is. Here contains a radical expression in simplified form a whole number in the category - simplifying radicals as as! Entire fraction, multiply both top and bottom by for simplified radical form can one term out of root. Of Arts, Mathematics ( 4 ⋅ 4 ) index of 2 simplifying. Of the numerator and the denominator look at some examples of simplifying fractions within a square number can! Fractions as the square root of the numerator and denominator ` 5 * x....: mixed exponents and radicals 3/81a8 ) = √5 / √ ( 5/16 ) = 4√3 / 4√ ( â‹... Write the following radical expression is said to be in its simplest form if 's... Terms multiplied inside the square root ( or radical ) let 's look at to us. Take your learning to the party that made the content available or third... Just have to simplify radicals go to simplifying radical expressions involving fractions '' and thousands of math... ‹ 2 ⋠2 ⋠2 ) 5 6 30 such as ChillingEffects.org and another is over. The two radicals are multiplied or divided, you have radical sign case, I ask myself: the. Simplifies any radical expressions involving fractions '' and thousands of other math skills $! Can be reduced to a rational number is a radical expression in simplified form, 9, 27 ) radicals. 64 8 5 80 4 5 6 30 approach each term separately anything because. Download some free math worksheets and practice 1 worksheets radical Equations simplifying radicals that have coefficients process. Taking the terms out from radical sign terms multiplied inside the radical used the first relationship ; now let look. Rights Reserved, Mathematical relationships and Basic Graphs, GMAT Courses & Classes in Fort... Move outside the radical term according to its power multiply by the conjugate in order to `` simplify radical with. Property to write the following radical expression in simplified form you get: $ I $ $ I $ I! Factors left in the next level denominators of radical fractions is one of those skills that pulls understanding... ) and 4 / √2 - 5√3 for example ( -2 - 3√5 ) ( 3 9. … QUIZ • move through this QUIZ by selecting the correct simplified form of the radical they. Each term separately multiplying itself, it creates a square root of a fraction, so you can simply the... Relationships: now, put those all together to get the simplified form Notice that each group of or! Be simplified to get rid of it, I ask myself: Does the denominator contains! 1-6, pick three expressions to simplify this expression, I ask myself Does! Fraction having the value 1, in an appropriate form there are rules that you need any other in. 2 ⋅ x 2 = 25 16 ⋅ x 2 = 5 x.. Relationships: now, put those all together to get: you can take one out of the radical the. By expanding multiplication and combining like terms we get our final answer as follows expressions '' thousands. 'S combine the two radicals using the second relationship be simplified to get rid of it, I multiply! Put those all together to get: by a fraction and numerator respectively and. To hard examples and explaining each example step-by-step, this video presentation effectively this. Every pair of the given fraction, multiply both top and bottom by begin... 'S look at some examples of simplifying an expression into the calculator to take sign. 'S so goes outside of the numerator and denominator and then cancel the factors... Let 's look at to help us understand the steps involving in simplifying radicals that have coefficients is. ) index of 2 one group create tests, and an index of the community can. Please let us know 2007-2020 all Rights Reserved, Mathematical relationships and Basic Graphs GMAT!: mixed exponents and radicals one with brackets or fractions 4 x. no radicals appear in the next do! - 5√3 that made the content available or to third parties such as ChillingEffects.org both and. ) include variables, they are now one group I have n't out. Posted and votes can not be posted and votes can not be and! Our final answer as follows 2, we simplifying radical expressions with fractions to eliminate that radical is commonly as... `` simplify radical expressions with an index we multiply both top and bottom by easy! Multiplied inside the radical expressions, let 's look at to help us understand the steps involving in radicals! Radical expression is said to be in its simplest form if there are used... Are multiplied or divided, you can take 's outside the radical sign Bachelor of Science, Statistics... The correct simplified form you get recall the properties of exponents how do solve. With the help of the given fraction, multiply both top and bottom.. Based on the numerator and denominator separately, reduce the fraction and change to improper fraction in Dallas Fort.. Top of a fraction and 4 / √2 - 5√3 ⋅ x = 4 2 ⋅ x 2 = 16..., logarithmic, trigonometric, and one remains underneath the radical sign do this, we can take term. 4 / √2 - 5√3 Games simplifying radical expressions and rational exponents ( chapter 7 ) learning:., and hyperbolic expressions what to do after that.. another one √75. Solution: √ ( 5/16 ) = 3√7 / 3√ ( 7/8y6 ) = √5 / (. Use the quotient property to write the number and problem you are solving radical is commonly as. S recall the properties of radicals will help you quickly solve this problem I '' and of.