Answer
$x^3+5x^2-2x-10$
Work Step by Step
Using the given functions, then,
\begin{align*}
R(x)\cdot Q(x)=(x+5)(x^2-2)
\\=
(x)(x^2)+(x)(-2)+(5)(x^2)+(5)(-2)
\\=
x^3-2x+5x^2-10
\\=
x^3+5x^2-2x-10
.\end{align*}
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