College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 2 - Cumulative Review - Page 196: 7


The solution set is $\color{blue}{\left\{1, 3\right\}}$.

Work Step by Step

RECALL: $|x| =a \longrightarrow x = a \text{ or } x = -a$ Thus, using the rule above gives: $|x-2| = 1 \longrightarrow x-2=1 \text{ or } x-2=-1$ Solve each equation to obtain: $x-2=1 \\x=1+2 \\x=3$ or $x-2=-1 \\x=-1+2 \\x=1$ Therefore, the solution set is $\color{blue}{\left\{1, 3\right\}}$.
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