Answer
$1$
Work Step by Step
Substituting $x=2$ and $y=-3$, the given expression, $
x^2+2xy+y^2
,$ evaluates to
\begin{array}{l}\require{cancel}
(2)^2+2(2)(-3)+(-3)^2
\\\\=
4-12+9
\\\\=
-8+9
\\\\=
1
.\end{array}
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 5 - Section 5.4 - Polynomials in Several Variables - Exercise Set - Page 375: 1
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