Answer
$9x^{2}+13x-14$
Work Step by Step
We are given the polynomial $(x^{2}+4x-7)+(8x^{2}+9x-7)$. We can simplify by combining like terms.
$(x^{2}+8x^{2})+(4x+9x)+(-7-7)=9x^{2}+13x-14$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set - Page 279: 36
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