6xydx+(4y+9x^2 )dy=0
(2y^2+3x)dx+2xydy=0
(10-6y+e^(-3x) )dx-2dy=0
(x^2 e^x+2xe^x y + e^x y^2 )dx+(2xe^x+2e^x y-2e^x )dy=0
(5x+4y)dx+(4x-8y^3 )dy=0
(3x^2+4xy)dx+(2x^2 +2y)dy=0
2yx^2+x^3+y^2=c
F(x,y)=10/3 e^3x-2e^3x y+x=c
5/2 x^2+4xy-2y^4=c
F(x,y)=3x^2 y^3+y^4=c
F(x,y)=x^2 y^2+x^3=c
x^2 e^x+y^2 e^x-2ye^x+2xye^x-2ye^x=c
