Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Exercise Set: 157

Answer

To multiply two numbers with the same sign, multiply their absolute values. The product will be positive since both numbers have the same sign. (refer to the step-by-step part for an example)

Work Step by Step

To multiply two numbers with the same sign, multiply their absolute values.The product will be positive since both numbers have the same sign. Example: $(-3)(-9)$ Multiply their absolute values: $|-3| \times |-9| = 3 \times 9 = 27$ The product must be positive, so $(-3)(-9)=27$
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