Question Number 157982 by tounghoungko last updated on 30/Oct/21
$$\:\left(\mathrm{3}{x}^{\mathrm{2}} −\mathrm{4}{xy}+{y}^{\mathrm{2}} −\mathrm{3}{y}\right){dx}+\left(\mathrm{2}{xy}−\mathrm{2}{x}^{\mathrm{2}} +\mathrm{6}{y}^{\mathrm{2}} +\mathrm{3}{x}\right){dy}=\mathrm{0} \\ $$