# Chapter 5 - Section 5.4 - Multiplying Polynomials - Exercise Set - Page 290: 112

$5x^3-10x$

#### Work Step by Step

Using the given functions, then, \begin{align*} P(x)\cdot Q(x)=5x(x^2-2) \\= 5x^3-10x .\end{align*}

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