Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.5 - Rationalizing Numerators and Denominators of Radical Expressions - Exercise Set - Page 717: 12



Work Step by Step

$\dfrac{x}{\sqrt{5}}$ Multiply the fraction by $\dfrac{\sqrt{5}}{\sqrt{5}}$ and simplify: $\dfrac{x}{\sqrt{5}}=\dfrac{x}{\sqrt{5}}\cdot\dfrac{\sqrt{5}}{\sqrt{5}}=\dfrac{x\sqrt{5}}{\sqrt{5^{2}}}=\dfrac{x\sqrt{5}}{5}$
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