Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter R - Algebra Reference - R.7 Radicals - R.7 Exercises: 28

Answer

$\dfrac{\sqrt{10}}{2}$

Work Step by Step

Rationalize the denominator by multiplying $\sqrt{10}$ to both the numerator and the denominator to have: $=\dfrac{5}{\sqrt{10}} \cdot \dfrac{\sqrt{10}}{\sqrt{10}} \\=\dfrac{5\sqrt{10}}{10}$ Cancel the common factor $5$ to have: $=\dfrac{\sqrt{10}}{2}$
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