Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 7 - Review - Page 470: 135



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}
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