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 + x*(-6 - x)
-2.0 - x^2 - 6.0*x