Answer
$x^4y^4-6x^2y^2+9$
Work Step by Step
RECALL:
$(a-b)^2=a^2-2ab+b^2$
Use the formula above with $a=x^2y^2$ and $b=3$ to obtain:
$=(x^2y^2)^2-2(x^2y^2)(3) + 3^2
\\=x^4y^4-6x^2y^2+9$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.4 - Polynomials - Exercise Set - Page 56: 67
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