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 - 1.1 - Numerical and Algebraic Expressions - Problem Set 1.1: 48

Answer

$= 150$

Work Step by Step

We plug in the values for the variables that are given in the problem: $(x+2y)(2x-y)$ for $x =7 $, $y = 4$ $= (7 + 2(4))(2(7)- 4)$ $= (7+8)(14-4)$ $= 15(10)$ $= 150$
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