Answer
$-12-18i$
Work Step by Step
Using $i^2=-1$ and the laws of exponents, the expression $
-3i(6-4i)
$ simplifies to
\begin{array}{l}
-18i+12i^2
\\=
-18i+12(-1)
\\=
-12-18i
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Review - Page 470: 135
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