\[ y(x) y'(x)+x y(x)^2-4 x=0 \] ✓ Mathematica : cpu = 0.0735028 (sec), leaf count = 47
\[\left \{\left \{y(x)\to -\sqrt {4+e^{-x^2+2 c_1}}\right \},\left \{y(x)\to \sqrt {4+e^{-x^2+2 c_1}}\right \}\right \}\] ✓ Maple : cpu = 0.016 (sec), leaf count = 33
\[ \left \{ y \left ( x \right ) =\sqrt {{{\rm e}^{-{x}^{2}}}{\it \_C1}+4},y \left ( x \right ) =-\sqrt {{{\rm e}^{-{x}^{2}}}{\it \_C1}+4} \right \} \]