**Simplifying Radical Expressions**

Rational exponents can be used to simplify some radical expressions. The

procedure is as follows.

**SIMPLIFYING RADICAL EXPRESSIONS**

**a. **Convert radical expressions to exponential expressions.

**b. **Use arithmetic and the laws of exponents to simplify.

**c. **Convert back to radical notation when appropriate.

*Important*: This procedure works only when all expressions under

radicals are *nonnegative *since rational exponents are not defined

otherwise. With this assumption, no absolute-value signs will be needed.