find the zero of the polynomial x square - 5 x - 6
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x^2-5x-6=0
x^2-(3+2)x-6=0
x^2-3x-2x-6=0
x(x-3)-2(x-3)=0
(x-3)(x-2)=0 i.e. x=2,3
Thus roots or zeros of polynomial x^2-5x-6 are 2 and 3.
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