Algebra: A Combined Approach (4th Edition)

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

Chapter 7 - Cumulative Review - Page 564: 29


10$x^{4}$ + 30x

Work Step by Step

$5x(2x^{3}$ + 6) = 5x($2x^{3}$) + 5x(6) = 10$x^{4}$ + 30x since $x^{m}$ $\times$ $x^{n}$ =$ x^{m + n}$, where m and n are 1 and 3, respectively. I.e.,m is the power of x in 5x and n is the power of x in $2x^{3}$.
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