Answer
$2i$
Work Step by Step
Rewrite -4 as -1(4) and simplify the exponent. Note that this answer is imaginary.
$((-1)(4))^{\frac{1}{2}}=(-1)^{\frac{1}{2}}(2^2)^{\frac{1}{2}}=2i$
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: 45
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