Answer
$\sqrt {(-1)^2} = 1$
Work Step by Step
$\sqrt {(-1)^2} = \sqrt {(-1)\times(-1)} = \sqrt 1 = \sqrt {1^2} = 1$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 0 - Section 0.2 - Exponents and Radicals - Exercises - Page 16: 54
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