– a) $x^3 - 6x^2 + 11x - 6$
$ \polyhornerscheme[x=1, resultstyle=\colorblue,resultbottomrule,resultleftrule,resultrightrule]x^3 - 6x^2 + 11x - 6$
$ \polyhornerscheme[x=2, resultstyle=\colorblue,resultbottomrule,resultleftrule,resultrightrule]x^2 - 5x +6$
$ \polyhornerscheme[x=3, (…)