2 x + 2*x - 2
x^2 + 2*x - 2
/ ___\ / ___\ \x + 1 - \/ 3 /*\x + 1 + \/ 3 /
(x + 1 - sqrt(3))*(x + 1 + sqrt(3))
2 -2 + x + 2*x
-2 + x^2 + 2*x
-2 + x*(2 + x)
-2.0 + x^2 + 2.0*x