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