9x^2-12xy+4y^2=9
x+2y=9
(3x - 2y)^2=9
|3x - 2y| = 3
1. 3x - 2y = 3
x + 2y = 9
4x = 12
x = 3
3 + 2y = 9
y = 3
2. 3x - 2y = -3
4x = 6
x = 3/2
3/2 + 2y = 9
y = 15/4
ответ (3, 3) (3/2, 15/4)
9x^2-12xy+4y^2=9
x+2y=9
(3x - 2y)^2=9
|3x - 2y| = 3
1. 3x - 2y = 3
x + 2y = 9
4x = 12
x = 3
3 + 2y = 9
y = 3
2. 3x - 2y = -3
x + 2y = 9
4x = 6
x = 3/2
3/2 + 2y = 9
y = 15/4
ответ (3, 3) (3/2, 15/4)