## Intermediate Algebra for College Students (7th Edition)

Published by Pearson

# Chapter 7 - Section 7.1 - Radical Expressions and Functions - Exercise Set - Page 511: 19

#### Answer

The given expression is not a real number.

#### Work Step by Step

Simplify inside of the square root to obtain: $\sqrt{-9}$ Note that the number inside a square root symbol is not allowed to be negative since its square root will not be a real number. Thus, the given expression is not a real number.

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