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