Answer
$x^2y^2-10xy+25$
Work Step by Step
Using $(a\pm b)^2=a^2\pm2ab+b^2$ or the square of a binomial, the square of the given expression, $
(xy-5)^2
,$ is
\begin{array}{l}\require{cancel}
(xy)^2-2(xy)(5)+(5)^2
\\\\=
x^2y^2-10xy+25
.\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 376: 48
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