Answer
$-38$
Work Step by Step
Substitute the given values of the variables to obtain:
$xy-x^2z+yz^2
\\=2(-3)-2^2(-4)+(-3)(-4)^2
\\=-6-4(-4)+(-3)(16)
\\=-6-(-16)+(-48)
\\=-6+16-48
\\=10-48
\\=-38$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 4 - Polynomials - 4.7 Polynomials in Several Variables - 4.7 Exercise Set - Page 283: 14
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