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