Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Review - Page 403: 14



Work Step by Step

$(-5y^{3})(4y^{4})=-5\times4\times y^{3}\times y^{4}=-20\times y^{3+4}=-20\times y^{7}=-20y^{7}$
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