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: $7+4i$.
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 4 - Quadratic Functions and Equations - 4-8 Complex Numbers - Practice and Problem-Solving Exercises - Page 253: 20
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