Answer
$-16+30i$
Work Step by Step
Step 1: $(3+5i)(3+5i)$
Step 2: $3(3+5i)+5i(3+5i)$
Step 3: $9+15i+15i+25i^{2}$
Step 4: $9+30i+25i^{2}$
Step 5: $9+30i+25(-1)$
Step 6: $9-25+30i$
Step 7: $-16+30i$
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 8 - Test - Page 474: 6
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