## Precalculus (6th Edition) Blitzer

Published by Pearson

# Chapter P - Section P.3 - Radicals and Rational Exponents - Exercise Set - Page 45: 11

#### Answer

$13$

#### Work Step by Step

RECALL: For negative real numbers $a$, $\sqrt{a^2}=|a|$. Use the rule above, where $a=-13$ to obtain $\sqrt{(-13)^2}=|-13| = 13$.

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