factorise the polynomial x^3-5x^2-2x+24
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this is given in ncert examples
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x3+2x2-7x2-14x2+12x+12x+24
=x2 (x+2)-7x(x+2)+12(x+2)
=(x+2)(x2-7x+12)
=(x+2)(x-4)(x-3)
=x2 (x+2)-7x(x+2)+12(x+2)
=(x+2)(x2-7x+12)
=(x+2)(x-4)(x-3)
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