Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Prerequisites - P.1 - Review of Real Numbers and Their Properties - Exercises - Page 12: 42



Work Step by Step

$|x|=x$ if $x\geq0$ $|x|=-x$ if $x\lt0$ Given that $-2\lt0$: $|-2|=-(-2)=2$ So: $-|-2|=-2$ Given that $2\geq0$: $|2|=2$ So: $-|2|=-2$ Hence: $-|-2|=-|2|$
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