Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 7 - Section 7.2 - Rational Exponents - Exercise Set: 108

Answer

$B=-2$

Work Step by Step

$-4^{\frac{1}{2}}=-(\sqrt 4)=-(2)=-2$ We know that $\sqrt 4=2$, because $2^{2}=4$.
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