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given cubic polynomial is x^3-6x^2+11x-6
if X=1 we get 1-6+11-6=0
so 1 is a root of given polynomial
so dividing the given equation with
x-1 we get
x-1)x^3-6x^2+11x-6(x^2-5x+6
x^3-x^2
___________
-5x^2+11x
-5x^2+5x
_____________
6x-6
6x-6
_______________
0
so x^3-6x^2+11x-6=(x-1)(x^2-5x+6)
solving x^2-5x+6=0 to find roots
x^2-5x+6=0
x2-2x-3x+6=0
x(x-2)-3(x-2)=0
(x-3)(x-2)=0
x=3 , x= 2
therefore the zeroes of the polymial are 1,2&3
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