3 27 - y
27 - y^3
/ ___\ / ___\ | 3 3*I*\/ 3 | | 3 3*I*\/ 3 | (x - 3)*|x + - + ---------|*|x + - - ---------| \ 2 2 / \ 2 2 /
((x - 3)*(x + 3/2 + 3*i*sqrt(3)/2))*(x + 3/2 - 3*i*sqrt(3)/2)
/ 2 \ -(-3 + y)*\9 + y + 3*y/
-(-3 + y)*(9 + y^2 + 3*y)
27.0 - y^3