\[ \boxed{ {x}^{6}{\frac {{\rm d}^{3}}{{\rm d}{x}^{3}}}y \left( x \right) +{x}^{2}{\frac {{\rm d}^{2}}{{\rm d}{x}^{2}}}y \left( x \right) -2\,y \left( x \right) =0} \]