Question 1081907
.
{{{graph( 330, 330, -10.5, 10.5, -10.5, 10.5,
          x^3-6x^2+11x-6
)}}}


Plot y = {{{x^3-6x^2+11x-6}}} 


The roots are 1, 2 and 3.


You can check it manually.


x^3-6x^2+11x-6 = (x-1)*(x-2)*(x-3).