Answer
$-x^3-3x^2-5x-10$
Work Step by Step
$(x^3+3x-10)-(2x^3+3x^2+8x)=(1-2)x^3-3x^2+(3-8)x-10=-x^3-3x^2-5x-10$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 6 Rational Exponents and Radical Functions - Cumulative Review Chapters 1-6 - Page 474: 36
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