Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - 5.6 - Integral Exponents and Scientific Notation - Problem Set 5.6: 16

Answer

$-\dfrac{1}{4}$

Work Step by Step

Using $a^{-x}=\dfrac{1}{a^x}$ and the laws of exponents, the given expression, $ -(2^{-2}),$ is equivalent to \begin{array}{l}\require{cancel} \dfrac{-1}{2^2} \\\\= \dfrac{-1}{4} \\\\= -\dfrac{1}{4} .\end{array}
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