# Prerequisites - P.1 - Review of Real Numbers and Their Properties - Exercises - Page 12: 35

25

#### Work Step by Step

$|x|=x$ if $x\geq0$ $|x|=-x$ if $x\lt0$ Given that $-5\lt0$: $|-5|=-(-5)=5$ $5|-5|=5\times5=25$

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