\[
\boxed{
 \left( y \left( x \right) +3\,x-1 \right) ^{2}{\frac {\rm d}{{\rm d}x}}y \left( x \right) - \left( 2\,y \left( x \right) -1 \right)  \left( 4\,y \left( x \right) +6\,x-3 \right) =0}
\]