Answer
$x=4$ or $x=-4$
Work Step by Step
We know from the definition of the absolute value:
$|x|=c$ implies $x=c$ or $x=-c$ (where $c$ is a number or expression)
Thus:
$|x|=4$ implies:
$x=4$ or $x=-4$
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter R - Section R.1 - Basic Concepts - R.1 Exercises - Page 10: 36
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