x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?

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x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?x3-6x2+

x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?
x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?

x3-6x2+ax+b=(x-1)(x-3)(?)a=?b=?
x3-6x2+ax+b=(x-1)(x-3)(x-m)=x3-(4+m)x2+(4m+3)x-3m
m=2
x3-6x2+ax+b=x3-6x2+11x-6
a=11,b=-6