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