Answer
$x\ge0$
Work Step by Step
The statement is equivalent to $\sqrt {x^2}=x$ which requires $x$ to be positive or zero, that is $x\ge0.$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - R.7 Radical Expressions - R.7 Exercises - Page 74: 33
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