#### Answer

$E=260+20i$

#### Work Step by Step

Plug in the given values to the formula $E=IZ$.
$E=(20+12i)(10-5i)$
Expand.
$E=200-100i+120i-60i^2$
Note $i^2=-1$ and combine like terms.
$E=(200+60)+(-100+120)i$
$E=260+20i$

Published by
Pearson

ISBN 10:
0321671791

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

$E=260+20i$

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