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if the sum of the zeroes, product of the...

if the sum of the zeroes, product of the zeroes and the sum of the coefficients of the polynomial `f(x)=ax^(2)+bx+c` are equal, and the sum of coefficients is 2, then find a. Find the largest single-digit number by which the expression `n^(3)-n` is divisible for all possible integral values of n.

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