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Contests
National and Regional Contests
Vietnam Contests
Hanoi Open Mathematics Competition
2007 Hanoi Open Mathematics Competitions
14
14
Part of
2007 Hanoi Open Mathematics Competitions
Problems
(2)
How many ordered pairs of integers
Source:
1/24/2016
How many ordered pairs of integers (x; y) satisfy the equation: 2
x
2
x^2
x
2
+
y
2
y^2
y
2
+ xy = 2(x + y)?
HOMC(Vietnam)
Source:
1/28/2016
How many ordered pairs of integers (x; y) satisfy the equation
x
2
+
y
2
+
x
y
=
4
(
x
+
y
)
?
x^2 + y^2 + xy = 4(x + y)?
x
2
+
y
2
+
x
y
=
4
(
x
+
y
)?
.
algebra