\[
\boxed{
y \left( x \right)  \left(  \left( ay \left( x \right) +bx \right) ^{3}+b{x}^{3} \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) +x \left(  \left( ay \left( x \right) +bx \right) ^{3}+a \left( y \left( x \right)  \right) ^{3} \right) =0}
\]