College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.8 - Solving Absolute Value Equations and Inequalities - 1.8 Exercises: 4

Answer

(a) $2x-1=5$ and $2x-1=-5$ (b) $-8\leq 3x+2\leq 8$

Work Step by Step

(a) To solve the equation $|2x-1|=5$ we think of it as two separate equations: $2x-1=5$ and $2x-1=-5$ (b) To solve the equation $|3x+2|\leq 8$ we think of it as a combination of two inequalities: $-8\leq 3x+2\leq 8$
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