  We show how all the quantal systems related to the exceptional Laguerre and
Jacobi polynomials can be constructed in a direct and systematic way, without
the need of shape invariance and Darboux-Crum transformation. Furthermore, the
prepotential need not be assumed a priori. The prepotential, the deforming
function, the potential, the eigenfunctions and eigenvalues are all derived
within the same framework. The exceptional polynomials are expressible as a
bilinear combination of a deformation function and its derivative.
