3 x - 7*x + 6
x^3 - 7*x + 6
3 6 + x - 7*x
6 + x^3 - 7*x
(x + 3)*(x - 1)*(x - 2)
((x + 3)*(x - 1))*(x - 2)
/ 2\ 6 + x*\-7 + x /
6 + x*(-7 + x^2)
6.0 + x^3 - 7.0*x
(-1 + x)*(-2 + x)*(3 + x)