3 2 x + x - 2
x^3 + x^2 - 2
2 3 -2 + x + x
-2 + x^2 + x^3
(x - 1)*(x + 1 + I)*(x + 1 - I)
((x - 1)*(x + 1 + i))*(x + 1 - i)
/ 2 \ (-1 + x)*\2 + x + 2*x/
(-1 + x)*(2 + x^2 + 2*x)
2 -2 + x *(1 + x)
-2 + x^2*(1 + x)
-2.0 + x^2 + x^3