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: 31



Work Step by Step

We are given: $x=-3$, $y=4$, $z=6$ We take into account the order of operations: Parenthesis, Exponents, Multiplication/Division, Addition/Subtraction Thus, we have:$$ \frac{(7-x)^2}{z-y} =\frac{(7-(-3))^2}{6-4}\\ =\frac{10^2}{2}=\frac{100}{2}=50 .$$
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