\[
\boxed{
9\, \left( y \left( x \right)  \right) ^{4} \left( {x}^{2}-1 \right)  \left( {\frac {\rm d}{{\rm d}x}}y \left( x \right)  \right) ^{2}-6\,x \left( y \left( x \right)  \right) ^{5}{\frac {\rm d}{{\rm d}x}}y \left( x \right) -4\,{x}^{2}=0}
\]