Algebra: A Combined Approach (4th Edition)

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

Chapter 7 - Section 7.2 - Multiplying and Dividing Rational Expressions - Exercise Set: 72


$\frac{21}{a^{2}}$ is true. $\frac{21}{a}$ is false.

Work Step by Step

$\frac{7}{a}$ * $\frac{3}{a}$=$\frac{7*3}{a*a}$= $\frac{21}{a^{2}}$ is true. $\frac{21}{a}$ is false.
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