Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 2 - Functions and Their Graphs - 2.1 Functions - 2.1 Assess Your Understanding - Page 56: 5



Work Step by Step

The given expression is $\dfrac{5}{\sqrt{5}-2}$. To rationalize the denominator, we need to multiply both the numerator and the denominator by $\sqrt{5}+2$. Hence the answer is $\sqrt{5}+2$.
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