Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 7 - Section 7.7 - Complex Numbers - Exercise Set: 32

Answer

$0-4i$

Work Step by Step

We can combine like terms to simplify the given expression. $(9-4i)-9=(9-9)-4i=0-4i$
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