# Chapter 8 - Polynomials and Factoring - Get Ready - Page 471: 13

$-36a^2-6a$

#### Work Step by Step

We start with the given expression: $6(a-3a^2-2a-3a^2)$ We apply the distributive property: $6a-18a^2-12a-18a^2$ We rearrange the terms using the commutative property of addition: $-18a^2-18a^2+6a-12a$ We combine like terms using addition and subtraction: $-36a^2-6a$

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