Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 1 - Section 1.2 - Algebraic Expressions and Sets of Numbers - Exercise Set: 57



Work Step by Step

The absolute value is the number of units a number $x$ is away from 0, and is indicated by putting $x$ between two vertical lines (e.g. |$x$|). Since 2 is 2 units away from 0, the absolute value of 2β€”written as |8|β€”is 2. However, the negative symbol is outside of the ||, so instead of taking the absolute value of $-2$, you take the absolute value of 2 and put the negative symbol ahead of that value to get the answer.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.