2 - x - x + 3
-x^2 - x + 3
/ ____\ / ____\ | 1 \/ 13 | | 1 \/ 13 | |x + - - ------|*|x + - + ------| \ 2 2 / \ 2 2 /
(x + 1/2 - sqrt(13)/2)*(x + 1/2 + sqrt(13)/2)
2 3 - x - x
3 - x - x^2
3 + x*(-1 - x)
3.0 - x - x^2