Answer
$-1$
Work Step by Step
$i^-6 = (i^6)^-1 = (i^4 * i^2)^-1 = (1 * -1) ^ -1 = -1$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Section 10.7 - Complex Numbers - Exercise Set - Page 740: 77
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