Evaluate each expression. See Example 7. (-4)^1/2

In Exercises 77–90, simplify each expression. Include absolute value bars where necessary.__³√x³

Evaluate each expression. See Example 7. (-64/27)^1/3

Simplify each radical. Assume all variables represent positive real numbers. -9 ⁵√243

In Exercises 75–92, rationalize each denominator. Simplify, if possible.17----------√10 - 2

In Exercises 79–112, use rational exponents to simplify each expression. If rational exponents appear after simplifying, write the answer in radical notation. Assume that all variables represent positive numbers.__⁸√x²

In Exercises 77–90, simplify each expression. Include absolute value bars where necessary.__⁴√y⁴

In Exercises 75–82, add or subtract terms whenever possible. ³√54xy^3−y³√128x

In Exercises 75–92, rationalize each denominator. Simplify, if possible.12------------√7 + √3