4 2 - x - 2*x + 3
-x^4 - 2*x^2 + 3
4 2 3 - x - 2*x
3 - x^4 - 2*x^2
/ ___\ / ___\ (x + 1)*(x - 1)*\x + I*\/ 3 /*\x - I*\/ 3 /
(((x + 1)*(x - 1))*(x + i*sqrt(3)))*(x - i*sqrt(3))
/ 2\ -(1 + x)*(-1 + x)*\3 + x /
-(1 + x)*(-1 + x)*(3 + x^2)
2 / 2\ 3 + x *\-2 - x /
3 + x^2*(-2 - x^2)
3.0 - x^4 - 2.0*x^2