College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.4: 10

Answer

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

Work Step by Step

$$(-7x^3+6x^2-11x+13)+(19x^3-11x^2+7x-17)$$ $$=(-7x^3+19x^3)+(6x^2-11x^2)+(-11x+7x)+(13-17)$$ $$=12x^3-5x^2-4x-4$$
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