2 - x + 6*x - 2
-x^2 + 6*x - 2
2 -2 - x + 6*x
-2 - x^2 + 6*x
/ ___\ / ___\ \x + -3 + \/ 7 /*\x + -3 - \/ 7 /
(x - 3 + sqrt(7))*(x - 3 - sqrt(7))
-2.0 - x^2 + 6.0*x
-2 + x*(6 - x)