2 x - 2*x + 5
x^2 - 2*x + 5
2 5 + x - 2*x
5 + x^2 - 2*x
(x + -1 + 2*I)*(x + -1 - 2*I)
(x - 1 + 2*i)*(x - 1 - 2*i)
5 + x*(-2 + x)
5.0 + x^2 - 2.0*x