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1400
Ordered Pair Equation
Editorial
number theory
diophantine equations
factorization
Find the number of ordered pairs of positive integers
(
x
,
y
)
(x, y)
(
x
,
y
)
such that
x
2
+
y
=
x
y
+
12
x^2 + y = xy + 12
x
2
+
y
=
x
y
+
12
.
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