\[
\boxed{
x \left( x+2 \right) {\frac {{\rm d}^{2}}{{\rm d}{x}^{2}}}y \left( x \right) +2\, \left( n+1+ \left( n+1-2\,l \right) x-l{x}^{2} \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) + \left( 2\,l \left( p-n-1 \right) x+2\,pl+m \right) y \left( x \right) =0}
\]