2 3*x + 2*x + 1
3*x^2 + 2*x + 1
2 1 + 2*x + 3*x
1 + 2*x + 3*x^2
/ ___\ / ___\ | 1 I*\/ 2 | | 1 I*\/ 2 | |x + - + -------|*|x + - - -------| \ 3 3 / \ 3 3 /
(x + 1/3 + i*sqrt(2)/3)*(x + 1/3 - i*sqrt(2)/3)
1.0 + 2.0*x + 3.0*x^2
1 + x*(2 + 3*x)