Answer
$50-10i$
Work Step by Step
Step 1: $(2-6i)(4+7i)$
Step 2: $2(4+7i)-6i(4+7i)$
Step 3: $8+14i-24i-42i^{2}$
Step 4: As $i^{2}=-1$, we get $8+14i-24i-42(-1)$.
Step 5: $8+42+14i-24i$
Step 6: $50-10i$
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 1-8 - Cumulative Review - Page 681: 101
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