\[ y(x) y'(x)+x y'(x)^2-y(x)^4=0 \] ✓ Mathematica : cpu = 0.31125 (sec), leaf count = 25
DSolve[-y[x]^4 + y[x]*Derivative[1][y][x] + x*Derivative[1][y][x]^2 == 0,y[x],x]
\[\left \{\left \{y(x)\to \frac {2 e^{\frac {c_1}{2}}}{-4 x+e^{c_1}}\right \}\right \}\] ✓ Maple : cpu = 0.289 (sec), leaf count = 95
dsolve(x*diff(y(x),x)^2+y(x)*diff(y(x),x)-y(x)^4 = 0,y(x))
\[y \left (x \right ) = -\frac {1}{2 \sqrt {-x}}\]