\[
\boxed{
{x}^{7}{\frac {\rm d}{{\rm d}x}}y \left( x \right) +2\, \left( {x}^{2}+1 \right)  \left( y \left( x \right)  \right) ^{3}+5\,{x}^{3} \left( y \left( x \right)  \right) ^{2}=0}
\]