Answer
$-270$
Work Step by Step
Since $a=2$ and $b=-3$, we have
$$(3a)(-5b^2)=(3(-5)) (ab^2)=-15 (2)(-3)^2\\
=-30(9)=-270
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
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: 50
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