\[
\boxed{
 \left( {\it a2}\,x+{\it c2} \right)  \left( {\frac {\rm d}{{\rm d}x}}y \left( x \right)  \right) ^{2}+ \left( {\it a1}\,x+{\it b1}\,y \left( x \right) +{\it c1} \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) +{\it a0}\,x+{\it b0}\,y \left( x \right) +{\it c0}=0}
\]