Elementary Algebra

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

Chapter 9 - Roots and Radicals - Chapters 1-9 Cumulative Review Problem Set - Page 432: 43



Work Step by Step

In order to solve this problem, we use the rules of exponents to get the square root of b in the numerator: $\frac{ -2\sqrt{ab^2}\sqrt{b^{-1}}}{5} \\ \frac{-2\sqrt{ab^{2-1}}}{5}$ $\frac{-2\sqrt{ab}}{5}$
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