#### Answer

$12i$

#### Work Step by Step

Multiply the numerator and denominator by the conjugate of the complex imaginary number.
$\frac{12i}{-i}\times\frac{i}{i}$
Expand.
$\frac{12i}{-i^2}$
Remember that $i^2=-1$.
$\frac{12i}{1}$
Simplify.
$12i$

Published by
Pearson

ISBN 10:
0321671791

ISBN 13:
978-0-32167-179-0

$12i$

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