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 Number of inequalities to solve: 23456789
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# Use Cube Roots and Fractional Exponents

Goal • Simplify expressions with fractional exponents.

VOCABULARY

Cube root The cube root of a real number a is a
real number b such that
Example 1 Find cube roots

Evaluate the expression.

 The cube root of -1 is -1. The opposite of the cube root of 343 is -7. The opposite of the cube root of -125 is 5.
Example 2 Multiple Choice Practice

What is the value of the expression

Solution

Evaluate and

Guided Practice Simplify the expression.

Example 3 Evaluate expressions involving square roots

Example 4 Evaluate expressions involving cube roots

Example 5 Use properties of exponents