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