## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson

# Chapter 10 - Exponents and Radicals - 10.4 Dividing Radical Expressions - 10.4 Exercise Set - Page 653: 9

Choice C

#### Work Step by Step

Using the Quotient Rule of radicals which is given by $\sqrt[n]{\dfrac{x}{y}}=\dfrac{\sqrt[n]{x}}{\sqrt[n]{y}}{},$ the expression, $\dfrac{\sqrt{5a^4}}{\sqrt{5a^3}} ,$ is equivalent to \begin{array}{l}\require{cancel} \dfrac{\sqrt{5a^4}}{\sqrt{5a^3}} \\\\= \sqrt{\dfrac{5a^4}{5a^3}} \\\\= \sqrt{\dfrac{\cancel5a^{4-3}}{\cancel5}} \\\\= \sqrt{a} .\end{array} Hence, $\text{ Choice C .}$

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