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: 30

Answer

$12x^3-5x^2-4x-4$

Work Step by Step

Consider the given polynomial $(-7x^3+6x^2-11x+13)+(19x^3-11x^2+7x-17)$ Need to drop the parentheses. Thus, $(-7x^3+6x^2-11x+13)+(19x^3-11x^2+7x-17)=-7x^3+6x^2-11x+13)+19x^3-11x^2+7x-17$ $=-7x^3+19x^3+6x^2-112x^2-4x-4$ $=12x^3-5x^2-4x-4$
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