Answer
$4.5x^{3}+.2x^{2}-3.8x+9.1$
Work Step by Step
We are asked to add $(.6x^{3}+1.2x^{2}-4.5x+9.1)+(3.9x^{3}-x^{2}+.7x)$. We can combine like terms to add.
$(.6x^{3}+3.9x^{3})+(1.2x^{2}-x^{2})+(-4.5x+.7x)+9.1=4.5x^{3}+.2x^{2}-3.8x+9.1$
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: 43
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