Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 7 - Section 7.7 - Complex Numbers - Concept and Vocabulary Check - Page 569: 4

Answer

$-6i$

Work Step by Step

Combine like terms by factoring out $i$ to obtain: $=i(-9+3) \\=i(-6) \\=-6i$
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