fromFactoredFraction x y computes the partial fraction
representation of
y % product x, where the elements of
x must be irreducible. The function transforms the factors
into their standard form with respect to unit factors.
There are more direct methods for special cases like polynomials over
rational numbers where the denominators are linear factors.
QC.listOf genSmallPrime /\ fractionConv
fmap (take 3) (QC.listOf genIrreduciblePolynomial) /\ fractionConv