Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - Chapter 1 Test Prep - Review Exercises: 27

Answer

$15-40i$

Work Step by Step

$-5i\left( 3-i\right) ^{2}=-5i\left( 9-2\times 3\times i+i^{2}\right) =-5i\left( 9+3i+\left( -1\right) \right) =-5i\left( 8+3i\right) =-40i-15i^{2}=-40i-15\times \left( -1\right) =15-40i$
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.