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: 109

Answer

$C=$ not a real number

Work Step by Step

$(-4)^{\frac{1}{2}}=\sqrt (-4)=$ not a real number We cannot take the square root of -4, or a negative number in general, because there is no real number $a$ such that $a^{2}=-4$.
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