Answer
$-x^{3}+8a-12$
Work Step by Step
We are given the expression $(3x^{3}-b+2a-6)+(-4x^{3}+b+6a-6)$. We can combine like terms to simplify.
$(3x^{3}-4x^{3})+(-b+b)+(2a+6a)+(-6-6)=-x^{3}+8a-12$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set - Page 279: 65
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