Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.4 The Irrational Numbers - Concept and Vocabulary Check - Page 295: 8

Answer

$\textbf{rationalizing the denominator}$

Work Step by Step

Recall: A radical expression that has a radical in its denominator is not yet in lowest terms. Such a radical expression can be reduced to lowest terms using the process called $\textbf{rationalizing the denominator}$. Thus, the missing expression in the given statement is $\textbf{rationalizing the denominator}$.
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