2 5*x - 3*x - 4
5*x^2 - 3*x - 4
2 -4 - 3*x + 5*x
-4 - 3*x + 5*x^2
/ ____\ / ____\ | 3 \/ 89 | | 3 \/ 89 | |x + - -- + ------|*|x + - -- - ------| \ 10 10 / \ 10 10 /
(x - 3/10 + sqrt(89)/10)*(x - 3/10 - sqrt(89)/10)
-4 + x*(-3 + 5*x)
-4.0 + 5.0*x^2 - 3.0*x