Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 4 - Section 4.1 - Integer Exponents and Scientific Notation - 4.1 Exercises: 48

Answer

$-\frac{1}{b^{4}}$

Work Step by Step

According to the negative exponent rule, $a^{-n}=\frac{1}{a^{n}}$. Therefore, $-b^{-4}=\frac{-1}{b^{4}}=-\frac{1}{b^{4}}$. Recall that the base of the exponent is $b$ and not $-b$.
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