\[
\boxed{
x \left( {x}^{2}+2 \right) {\frac {{\rm d}^{2}}{{\rm d}{x}^{2}}}y \left( x \right) -{\frac {\rm d}{{\rm d}x}}y \left( x \right) -6\,xy \left( x \right) =0}
\]