Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 7 - Functions and Graphs - 7.5 Formulas, Applications, and Variation - 7.5 Exercise Set: 85

Answer

$9x^2$

Work Step by Step

RECALL: $u^2=u(u)$ Use the rule above to obtain: $$(3x)^2=(3x)(3x) =9x^2$$
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