Precalculus (10th Edition)

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

Chapter 1 - Graphs - 1.4 Circles - 1.4 Assess Your Understanding - Page 38: 2


$x=5$ or $x=-1$

Work Step by Step

Take the square root of both sides \begin{align*} \sqrt{(x-2)^2}&=\pm \sqrt{9}\\ x-2&=\pm 3\\ x&=2 \pm 3 \end{align*} Hence, $x=2+3=5$ or $x=2-3=-1$
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