/ ___\ / ___\
| 3 3*I*\/ 3 | | 3 3*I*\/ 3 |
1*(a - 3)*|a + - + ---------|*|a + - - ---------|
\ 2 2 / \ 2 2 /
((1*(a - 3))*(a + (3/2 + 3*i*sqrt(3)/2)))*(a + (3/2 - 3*i*sqrt(3)/2))
/ 2 \ (-3 + a)*\9 + a + 3*a/
(-3 + a)*(9 + a^2 + 3*a)