2 4*x - 6*x - 3
4*x^2 - 6*x - 3
2 -3 - 6*x + 4*x
-3 - 6*x + 4*x^2
/ ____\ / ____\ | 3 \/ 21 | | 3 \/ 21 | |x + - - + ------|*|x + - - - ------| \ 4 4 / \ 4 4 /
(x - 3/4 + sqrt(21)/4)*(x - 3/4 - sqrt(21)/4)
-3 + 2*x*(-3 + 2*x)
-3.0 + 4.0*x^2 - 6.0*x