Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 1 - Section 1.2 - Symbols and Sets of Numbers - Exercise Set: 91

Answer

To find the absolute value of a number, the number inside the absolute value brackets is taken out. If it is a positive number, it is kept the same, if it is a negative number the negative sign is removed to make it a positive. For example $|-4|$ becomes $4$

Work Step by Step

An absolute value is the distance a number is from zero on a number line, irrespective of sign. Therefore the value will always be the the positive of the number within the absolute value signs.
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