2 2*x + 2*x + 5
2*x^2 + 2*x + 5
2 5 + 2*x + 2*x
5 + 2*x + 2*x^2
/ 1 3*I\ / 1 3*I\ |x + - + ---|*|x + - - ---| \ 2 2 / \ 2 2 /
(x + 1/2 + 3*i/2)*(x + 1/2 - 3*i/2)
5 + 2*x*(1 + x)
5.0 + 2.0*x + 2.0*x^2