Answer
$|a|$
Work Step by Step
RECALL:
For any real number $a$, $\sqrt{a^2} = |a|$.
Thus,
$\sqrt{a^2} = |a|.$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.3 - Radicals and Rational Exponents - Concept and Vocabulary Check - Page 45: 3
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