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: 11

Answer

$12x^3+4x^2+12x-14$; Degree 3

Work Step by Step

$$(17x^3-5x^2+4x-3)-(5x^3-9x^2-8x+11)$$ $$=(17x^3-5x^3)+(-5x^2-(-9x^2))+(4x-(-8x))+(-3-11)$$ $$=12x^3+(-5x^2+9x^2)+(4x+8x)-14$$ $$=12x^3+4x^2+12x-14$$
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