Answer
$-15.6x^{8}$
Work Step by Step
$(-5.2x^{4})(3x^{4})=-5.2\times3\times x^{4+4}=-15.6\times x^{8}=-15.6x^{8}$
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 378: 8
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