Answer
$2\sqrt{2i}$
Work Step by Step
Rewrite 64 as 2 to the power 6. Note that this answer is not real.
$((-1)(64))^{\frac{1}{2}}=(-1)^{\frac{1}{2}}(2^6)^{\frac{1}{2}}=2\sqrt{2i}$
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter R - Section R.6 - Rational Exponents - R.6 Exercises - Page 56: 46
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