# Chapter 8 - Polynomials and Factoring - 8-1 Adding and Subtracting Polynomials - Mixed Review - Page 479: 65

$18r^3$

#### Work Step by Step

We start with the given expression: $6r^2\times3r$ We rearrange and regroup the factors by like terms: $(6\times3)(r^2r)$ We multiply the constants: $18r^2r$ To multiply powers with the same base, we add the exponents: $18r^{2+1}=18r^3$

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