Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 6 - Radical Functions and Rational Exponents - 6-2 Multiplying and Dividing Radical Expressions - Practice and Problem-Solving Exercises - Page 372: 66

Answer

$\dfrac{2\sqrt[3]{25x}}{x}$

Work Step by Step

Multiplying the numerator and the denominator by an expression equal to $1$ which will make the denominator a perfect power of the index, the given expression is equivalent to \begin{align*}\require{cancel} & =\dfrac{10}{\sqrt[3]{5x^2}}\cdot\dfrac{\sqrt[3]{5^2x}}{\sqrt[3]{5^2x}} \\\\&= \dfrac{10\sqrt[3]{5^2x}}{\sqrt[3]{5^3x^3}} \\\\&= \dfrac{10\sqrt[3]{25x}}{\sqrt[3]{(5x)^3}} \\\\&= \dfrac{10\sqrt[3]{25x}}{5x} \\\\&= \dfrac{\cancel{10}^2\sqrt[3]{25x}}{\cancel5^1x} \\\\&= \dfrac{2\sqrt[3]{25x}}{x} .\end{align*} Hence, the simplified form of the given expression is $ \dfrac{2\sqrt[3]{25x}}{x} $.
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