Answer
$\int$ $x$$(5-x^{2})^{3}$ $dx$ = -$\frac{1}{2}$$\int$ $u^{3}$ $du$
Work Step by Step
$u$ = $(5-x^{2})$
$du$ = -$2x$ $dx$
-$\frac{1}{2}$$du$ = $x$ $dx$
$\int$ $x$$(5-x^{2})^{3}$ $dx$ = -$\frac{1}{2}$$\int$ $u^{3}$ $du$
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