Answer
$x^3-6x^2-x-9$
Work Step by Step
Given:$(-8x^3+5x^2-7x+4)+(9x^3-11x^2+6x-13)$
This implies
$=-8x^3+9x^3+5x^2-11x^2-7x+6x-13+4$
Hence, the result is : $=x^3-6x^2-x-9$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Review Exercises - Page 399: 10
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