Answer
$6x^3+10x^2+11x-8$; Degree 3
Work Step by Step
$$(8x^2+7x-5)-(3x^2-4x)-(-6x^3-5x^2+3)$$ $$=-(-6x^3)+(8x^2-3x^2-(-5x^2))+(7x-(-4x))+(-5-3)$$ $$=6x^3+(5x^2+5x^2)+(7x+4x)-8$$ $$=6x^3+10x^2+11x-8$$
College Algebra (6th Edition)
by Blitzer, Robert F.
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 - Page 61: 14
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