Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 5 - Section 5.4 - Multiplication of Monomials - Exercise - Page 224: 51


$$-144 .$$

Work Step by Step

Since $a=2$ and $b=-3$, we have $$(9a^2)(-2a)=(9(-2)) (a^3)=-18 (2)^3\\ =-18*8=-144 .$$
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