2 4 64*x - 121*y
64*x^2 - 121*y^4
/ 2\ / 2\ | 11*y | | 11*y | 1*|x + -----|*|x - -----| \ 8 / \ 8 /
(1*(x + 11*y^2/8))*(x - 11*y^2/8)
64.0*x^2 - 121.0*y^4
/ 2 \ / 2\ \- 11*y + 8*x/*\8*x + 11*y /
(-11*y^2 + 8*x)*(8*x + 11*y^2)