Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.7 - Complex Numbers - Exercise Set: 82

Answer

$128i$

Work Step by Step

$(-2i)^7 = (-2)^7 \cdot i^7 = -128 \cdot i^4 \cdot i^3 = -128 \cdot 1 \cdot -i = 128i$
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.