2 2*x + 7
2*x^2 + 7
/ ____\ / ____\ | I*\/ 14 | | I*\/ 14 | |x + --------|*|x - --------| \ 2 / \ 2 /
(x + i*sqrt(14)/2)*(x - i*sqrt(14)/2)
7.0 + 2.0*x^2