Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.4 - Integers: Multiplication and Division - Problem Set 1.4: 22

Answer

324

Work Step by Step

We see that we are multiplying a negative number by a negative number in this problem. Recall, when we multiply two negative numbers, the negatives will cancel out, so the answer will always be positive. Thus, we obtain: $-18 \times -18=324$
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