Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 5 - Section 5.1 - Fundamental Operations - Exercise - Page 214: 37

Answer

$-1$

Work Step by Step

We are given: $x=-1$, $y=2$, $z=-3$ We take into account the order of operations: Parenthesis, Exponents, Multiplication/Division, Addition/Subtraction Thus, we have: $$(x-xy)^2(z-2x)=(-1-(-1)2)^2(-3-2(-1))\\ =(-1+2)^2(-3+2)=1^2(-1)=-1 .$$
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