Answer
$-16$
Work Step by Step
Substituting $x=2$ and $y=-3$, the given expression, $
x^3y-xy+2
,$ evaluates to
\begin{array}{l}\require{cancel}
(2)^3(-3)-(2)(-3)+2
\\\\=
(8)(-3)-(-6)+2
\\\\=
-24+6+2
\\\\=
-18+2
\\\\=
-16
.\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: 4
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.
