# Chapter R - Section R.3 - Polynomials - R.3 Exercises - Page 28: 1

-16$x^{7}$

#### Work Step by Step

(-4$x^{5}$)(4$x^{2}$) = (-4 * 4)($x^{5}$$x^{2}$) = -16$x^{5 + 2}$ = -16$x^{7}$

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