2. Martin-Gay, Beginning Algebra, 5ed 22

3. 33

4. 44 EXAMPLE Simplify the following radical expression.

5. Martin-Gay, Beginning Algebra, 5ed 55

6. 66 Perfect Square Variables x 2 = (x) 2 x 4 = (x 2 ) 2 x 6 = (x 3 ) 2 x 8 = (x 4 ) 2 x 10 = (x 5 ) 2 So, x 2n = (x n ) 2 A variable raised to an even exponent!

7. Martin-Gay, Beginning Algebra, 5ed 77 EXAMPLE Simplify the following radical expression.

8. Martin-Gay, Beginning Algebra, 5ed 88 EXAMPLE Simplify the following radical expression.

9. Martin-Gay, Beginning Algebra, 5ed 99

10. 10 EXAMPLE Multiply and simplify the following radical expressions.