Answer
$-5$
Work Step by Step
Substituting $x=2$ and $y=-3$, the given expression, $
x^2+3xy+y^2
,$ evaluates to
\begin{array}{l}\require{cancel}
(2)^2+3(2)(-3)+(-3)^2
\\\\=
4-18+9
\\\\=
-14+9
\\\\=
-5
.\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: 2
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
