  Hooley proved that if $f\in \Bbb Z [X]$ is irreducible of degree $\ge 2$,
then the fractions $\{ r/n\}$, $0<r<n$ with $f(r)\equiv 0\pmod n$, are
uniformly distributed in $(0,1)$. In this paper we study such problems for
reducible polynomials of degree $2$ and $3$ and for finite products of linear
factors. In particular, we establish asymptotic formulas for exponential sums
over these normalized roots.
