For a linear expression \(f(x)=ax+b\), the polynomial \[g(x) = x^3-x^2+2f(x)\] can be factorized as \((x-1)(x+\alpha)(x+\beta)\). If \(\alpha\beta=22\), what is the value of \(f(12)\)?

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What is the largest positive integer \(a\) such that the cubic polynomial \[x^3-21x^2+(20+a)x-a\] can be factorized as the product of \(3\) distinct linear polynomials?

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If \(a\) is a real number and a cubic equation \[f(x) = x^3-18x^2+(a+32)x-2a\] has a repeated root, what is the sum of all the possible values of \(a\)?

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