Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 8 - Radical Functions - 8.5 Complex Numbers - 8.5 Exercises: 54

Answer

$-16-30i$

Work Step by Step

$(3-5i)(3-5i)$ =$3(3-5i)-5i(3-5i)$ =$9-15i-15i+25i^{2}$ =$9-30i+25(-1)$ =$9-25-30i$ =$-16-30i$
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