\[
\boxed{
{\frac {\rm d}{{\rm d}x}}y \left( x \right) ={\frac {6\,x+{x}^{3}+{x}^{3} \left( y \left( x \right)  \right) ^{2}+4\,{x}^{2}y \left( x \right) +{x}^{3} \left( y \left( x \right)  \right) ^{3}+6\,{x}^{2} \left( y \left( x \right)  \right) ^{2}+12\,xy \left( x \right) +8}{{x}^{3}}}=0}
\]