Answer
$-x^{3}$
Work Step by Step
If $x$ is positive, then $|x|=x$,
if $x$ is negative, then $|x|=-x.$
Thus
$ x^{2}|x|=-x^{2}x^{1}\qquad$... apply $a^{m}a^{n}=a^{m+n}$
=$-x^{3}$
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