## Intermediate Algebra (12th Edition)

Published by Pearson

# Chapter 7 - Review Exercises: 8

#### Answer

$|x|$

#### Work Step by Step

We know that $\sqrt x^{2}=|x|$, because $|x|^{2}=x\times x=x^{2}$. We must include the absolute value sign to ensure that the square root is positive, since we know that the square root of a real number cannot be negative.

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