\[ a y(x)-2 a+b e^x+y(x) y'(x)=0 \] ✗ Mathematica : cpu = 26.1093 (sec), leaf count = 0 , could not solve
DSolve[-2*a + b*E^x + a*y[x] + y[x]*Derivative[1][y][x] == 0, y[x], x]
✗ Maple : cpu = 0. (sec), leaf count = 0 , could not solve
dsolve(y(x)*diff(y(x),x)+a*y(x)+b*exp(x)-2*a = 0,y(x))