✓ Mathematica : cpu = 1.38727 (sec), leaf count = 26
DSolve[-2*(x - y[x]^2)*Derivative[1][y][x]^3 + Derivative[1][y][x]*(1 + 4*y[x]*Derivative[1][y][x]) + (x + y[x]^2)*Derivative[2][y][x] == 0,y[x],x]
✓ Maple : cpu = 0.158 (sec), leaf count = 23
dsolve((x+y(x)^2)*diff(diff(y(x),x),x)-2*(x-y(x)^2)*diff(y(x),x)^3+diff(y(x),x)*(1+4*y(x)*diff(y(x),x))=0,y(x))