Answer
$-3x^3$
Work Step by Step
$-7x^3 + 4x^3 = (-7+4)x^3 = -3x^3$
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 - Section 5.1 - Introduction to Polynomials and Polynomial Functions - Concept and Vocabulary Check - Page 323: 19
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