/ 2 \ y*\-49*y + x *(x - 49*y)/ ------------------------- x*(x - 49*y)
y*(-49*y + x^2*(x - 49*y))/(x*(x - 49*y))
/ 2 \ y*\-49*y + x *(x - 49*y)/ ------------------------- x*(x - 49*y)
y*(-49*y + x^2*(x - 49*y))/(x*(x - 49*y))
2 / 2 \ - 49*y + x*y*\x - 49*x*y/ --------------------------- 2 x - 49*x*y
(-49*y^2 + x*y*(x^2 - 49*x*y))/(x^2 - 49*x*y)
/ 3 2\ y*\x - 49*y - 49*y*x / ----------------------- x*(x - 49*y)
y*(x^3 - 49*y - 49*y*x^2)/(x*(x - 49*y))