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 - Concept Quiz 1.4 - Page 25: 10

Answer

True

Work Step by Step

Evaluate the given expression by substituting the given values of the variables to obtain: $2x-5y-xy \\= 2(-2) - 5(-7) - (-2)(-7) \\=-4 - (-35) - 14 \\=-4 + 35 -14 \\=31 - 14 \\=17$ Thus, the given statement is true.
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