2 2
4*x - 40*x*y + 100*y
----------------------
15*y - 3*x (4*x^2 - 40*x*y + 100*y^2)/(15*y - 3*x) при y = 2
(4*x^2 - 40*x*y + 100*y^2)/(15*y - 3*x)
(4*x^2 - 40*x*(2) + 100*(2)^2)/(15*(2) - 3*x)
(4*x^2 - 40*x*2 + 100*2^2)/(15*2 - 3*x)
(400 - 80*x + 4*x^2)/(30 - 3*x)
2 2
4*x + 100*y - 40*x*y
----------------------
-3*x + 15*y (4.0*x^2 + 100.0*y^2 - 40.0*x*y)/(15.0*y - 3.0*x)
2 2
4*x + 100*y - 40*x*y
----------------------
-3*x + 15*y / 2 \
4*\25*y + x*(x - 10*y)/
------------------------
3*(-x + 5*y) 2 2
4*x + 100*y - 40*x*y
----------------------
15*y - 3*x