2 3*x + 4*x - 5
3*x^2 + 4*x - 5
/ ____\ / ____\ | 2 \/ 19 | | 2 \/ 19 | |x + - - ------|*|x + - + ------| \ 3 3 / \ 3 3 /
(x + 2/3 - sqrt(19)/3)*(x + 2/3 + sqrt(19)/3)
2 -5 + 3*x + 4*x
-5 + 3*x^2 + 4*x
-5.0 + 4.0*x + 3.0*x^2
-5 + x*(4 + 3*x)