/ ___\ / ___\ | 1 I*\/ 3 | | 1 I*\/ 3 | (x + 1)*x*|x + - - + -------|*|x + - - - -------| \ 2 2 / \ 2 2 /
(((x + 1)*x)*(x - 1/2 + i*sqrt(3)/2))*(x - 1/2 - i*sqrt(3)/2)
4 / 3\ y *\1 + y /
y^4*(1 + y^3)
4 / 2 \ y *(1 + y)*\1 + y - y/
y^4*(1 + y)*(1 + y^2 - y)