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

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 10 - Exponents and Radicals - Study Summary - Practice Exercises: 6

Answer

$\sqrt{21xy}$

Work Step by Step

Using the Product Rule of radicals which is given by $\sqrt[m]{x}\cdot\sqrt[m]{y}=\sqrt[m]{xy},$ then \begin{array}{l}\require{cancel} \sqrt{7x}\cdot\sqrt{3y} \\\\= \sqrt{7x(3y)} \\\\= \sqrt{21xy} .\end{array}
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