Answer
$22+3i$
Work Step by Step
Step 1: $(4-i)(5+2i)$
Step 2: $4(5+2i)-i(5+2i)$
Step 3: $20+8i-5i-2i^{2}$
Step 4: $20+3i-2(-1)$
Step 5: $20+3i+2$
Step 6: $22+3i$
Trigonometry (11th Edition) Clone
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
978-0-13-421743-7
ISBN 13:
978-0-13421-743-7
Chapter 8 - Review Exercises - Page 409: 10
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