\[
\boxed{
{x}^{2} \left( {\frac {\rm d}{{\rm d}x}}y \left( x \right)  \right) ^{2}-4\,x \left( y \left( x \right) +2 \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) +4\,y \left( x \right)  \left( y \left( x \right) +2 \right) =0}
\]