# Chapter R - Section R.3 - Polynomials - R.3 Exercises: 2

-18$y^{7}$

#### Work Step by Step

(3$y^{4}$)(-6$y^{3}$) = (3)*(-6)($y^{4}$$y^{3}$) = - 18$y^{4 + 3}$ = -18$y^{7}$

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