Answer
$6+3i$
Work Step by Step
Combine like the like terms: $2$ and $4$ which gives you $6$, and $4i$ and $-i$ which gives you $3i$. Your two final combinations give you the final answer of $6+3i$.
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: 18
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