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