Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 5 - Section 5.1 - Introduction to Polynomials and Polynomial Functions - Exercise Set - Page 324: 29

Answer

$11x^3+7x^2-12x-4$

Work Step by Step

Consider the given polynomial $(-6x^3+5x^2-8x+9)+(17x^3+2x^2-4x-13)$ Need to drop the parentheses. Thus, $(-6x^3+5x^2-8x+9)+(17x^3+2x^2-4x-13)=-6x^3+5x^2-8x+9+17x^3+2x^2-4x-13$ $=-6x^3+17x^3+5x^2+2x^2-12x-4$ $=11x^3+7x^2-12x-4$
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