\[ x^4 \left (-y(x)^2\right )+x^3 y'(x)+x^2 y(x)+20=0 \] ✓ Mathematica : cpu = 0.0902252 (sec), leaf count = 35
\[\left \{\left \{y(x)\to -\frac {5 x^4-\frac {4 c_1}{x^5}}{x \left (x^5+\frac {c_1}{x^4}\right )}\right \}\right \}\] ✓ Maple : cpu = 0.314 (sec), leaf count = 26
\[y \relax (x ) = \frac {5 x^{9}+4 c_{1}}{x^{2} \left (-x^{9}+c_{1}\right )}\]