2 x - x + 5
x^2 - x + 5
2 5 + x - x
5 + x^2 - x
/ ____\ / ____\ | 1 I*\/ 19 | | 1 I*\/ 19 | |x + - - + --------|*|x + - - - --------| \ 2 2 / \ 2 2 /
(x - 1/2 + i*sqrt(19)/2)*(x - 1/2 - i*sqrt(19)/2)
5 + x*(-1 + x)
5.0 + x^2 - x