Answer
$8.4x^{6}$
Work Step by Step
$-4.2x(-2x^{5})=-4.2\times-2\times x^{1+5}=8.4\times x^{6}=8.4x^{6}$
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 5.5 - Multiplying Polynomials - Exercise Set - Page 379: 60
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