#### Answer

$7+4i$

#### Work Step by Step

Combine the two like terms out of the three total: $9i$ and $-5i$. That gives you $4i$. Then, use your other term, $7$, in the final answer: $7+4i$.

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

$7+4i$

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