#### Answer

$|-x|$

#### Work Step by Step

$\sqrt ((-x)^{2})=|-x|$
Since we do not know if x represents a positive number, we must keep the absolute value to ensure that the result is not negative.

Published by
Pearson

ISBN 10:
0321785045

ISBN 13:
978-0-32178-504-6

$|-x|$

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