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

Answer

$13$

Work Step by Step

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

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.