Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 8 - Section 8.1 - Complex Numbers - 8.1 Problem Set: 76



Work Step by Step

$z_{2}z_{1}$ =$(2-3i)(2+3i)$ =$2(2+3i)-3i(2+3i)$ =$4+6i-6i-9i^{2}$ =$4-9(-1)$ =$4+9$ =$13$
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