Answer
$49$
Work Step by Step
Substituting $x=5$ and $y=-2$, the given expression, $
x^2-2xy+y^2
,$ evaluates to
\begin{array}{l}
(5)^2-2(5)(-2)+(-2)^2
\\\\=
25+20+4
\\\\=
49
.\end{array}
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 9 - Roots and Radicals - Chapters 1-9 Cumulative Review Problem Set - Page 432: 10
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