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Learn how to simplify radicals by taking the square root of perfect squares, breaking down the radicand into numbers, dividing radicals to simplify fractions, and finding equivalent expressions by solving for x.
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Perfect Squares 1 121 • 12 = • 22= • 32= • 42= • 52= • 62= • 72= • 82= • 92= • 102 • 112 = • 122= • 132= • 142= • 152= • 162= • 172= • 182= • 192= • 202= 144 4 9 169 16 196 225 25 36 256 49 289 324 64 81 361 100 400
How to Simplify Radicals • If the number is a perfect square, just take the square root of the number • If not : • Using multiplication, break down the radicand into 2 numbers • 1st number being the HIGHEST perfect square that divides into the radicand
Examples • 1.) • 2.) • 3.)
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12.) • 13.) • 14.)
REVIEWSimplify A. . B. . C. . D. .
REVIEWSimplify A. . B. . C. . D. .
Simplifying Radicals as Fractions • Divide the numerator by the denominator and simplify OR • Take the square roots of the numerator and denominator separately
1. Simplify. Divide the radicals. Uh oh… There is a radical in the denominator! Whew! It simplified!
For what value of x should the expression be simplified? • x = 22 • x = 13 • x = 15 • x = 26
For what value of x should the expression be simplified? • x = 15 • x = 21 • x = 39 • x = 51
For what value of x should the expression be simplified? • x = 13 • x = 34 • x = 118 • x = 65
For what value of x is equal to • 2 • 7 • 14 • 28
For which value of x is the expression equal to a whole number? • 4 • 5 • 18 • 25