  We obtain closed-form solutions of several inhomogeneous Lienard equations by
the factorization method. The two factorization conditions involved in the
method are turned into a system of first-order differential equations
containing the forcing term. In this way, one can find the forcing terms that
lead to integrable cases. Because of the reduction of order feature of
factorization, the solutions are simultaneously solutions of first-order
differential equations with polynomial nonlinearities. The illustrative
examples of Lienard solutions obtained in this way generically have rational
parts and consequently display singularities.
