Answer
42 $r^{13}$
Work Step by Step
6$r^{3}$ (7$r^{10}$ )
( 6*7) ($r^{3}$$r^{10}$ ) group factors with common bases
42 $r^{13}$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Section 5.4 - Adding and Subtracting Polynomials - Exercise Set - Page 373: 76
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