x cube minus 6 X square + 11 x minus 6
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x^3-6x^2+11x-6
=x^3-5x^2-x^2+5x+6x-6
=x^3-x^2-5x^2+6x-6
=x^2(x-1)-5x(x-1)+6(x-1)
=(x-1)(x^2-5x+6)
=(x-1)(x^2-3x-2x+6)
=(x-1)(x-2)(x-3)
x=1,2,3
=x^3-5x^2-x^2+5x+6x-6
=x^3-x^2-5x^2+6x-6
=x^2(x-1)-5x(x-1)+6(x-1)
=(x-1)(x^2-5x+6)
=(x-1)(x^2-3x-2x+6)
=(x-1)(x-2)(x-3)
x=1,2,3
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