2 3*x - x + 1
3*x^2 - x + 1
2 1 - x + 3*x
1 - x + 3*x^2
/ ____\ / ____\ | 1 I*\/ 11 | | 1 I*\/ 11 | |x + - - + --------|*|x + - - - --------| \ 6 6 / \ 6 6 /
(x - 1/6 + i*sqrt(11)/6)*(x - 1/6 - i*sqrt(11)/6)
1.0 - x + 3.0*x^2
1 + x*(-1 + 3*x)