2 - x + 6*x + 2
-x^2 + 6*x + 2
2 2 - x + 6*x
2 - x^2 + 6*x
/ ____\ / ____\ \x + -3 + \/ 11 /*\x + -3 - \/ 11 /
(x - 3 + sqrt(11))*(x - 3 - sqrt(11))
2.0 - x^2 + 6.0*x
2 + x*(6 - x)