Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.7 - Complex Numbers - Exercise Set - Page 740: 40

Answer

$5 + 10i$

Work Step by Step

$-5i(-2 + i) = 10i - 5i^2 = 10i - 5(-1) = 5 + 10i$
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