Answer
$13-18i$
Work Step by Step
$(2-5i)(4+i)$
=$2(4+i)-5i(4+i)$
=$8+2i-20i-5i^{2}$
=$8-18i-5(-1)$
=$8+5-18i$
=$13-18i$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 12 - Cumulative Review - Page 913: 37
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