f(x) = 6x^2 - 5x + 1
The prospective extensible version is: g(x,a,b) = ax + b
f(x,q()) = q(x,3,-1) q(x,2,-1)
f(x,g)
It's the generalization for factorable polynomials. It's clearly harder to read than the easy to delete version. It's more complex to write, and so on. g(x,a) = ax^2 - 5x - 1
f(x,q()) = q(x,6)
f(x,g)
This version is most likely just adding complexity. A single function is almost always a better bet.
Instead it's more like "nothing to see here, kindly vote in our puppet candidate X, thanks!" for various local values of X.