Answer
$-19$
Work Step by Step
Substituting $x=2$ and $y=-3$, the given expression, $
3x^2y-4y+5
,$ evaluates to
\begin{array}{l}\require{cancel}
3(2)^2(-3)-4(-3)+5
\\\\=
3(4)(-3)-(-12)+5
\\\\=
-36+12+5
\\\\=
-24+5
\\\\=
-19
.\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: 6
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