Answer
$\sqrt 2-1$
Work Step by Step
The absolute value of a positive number is simply the number itself. Since $\sqrt 2-1$ is positive, $|\sqrt 2-1|=\sqrt 2-1$.
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 - Review Exercises - Page 142: 10
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