\[ y'(x)=\frac {x^5 \sqrt {4 x^2 y(x)+1}+\frac {1}{2}}{x^3} \] ✓ Mathematica : cpu = 0.245539 (sec), leaf count = 33
\[\left \{\left \{y(x)\to \frac {x^{10}-8 c_1 x^6+16 c_1{}^2 x^2-4}{16 x^2}\right \}\right \}\] ✓ Maple : cpu = 0.338 (sec), leaf count = 26
\[\left \{\frac {x^{4}}{2}+c_{1}-\frac {\sqrt {4 x^{2} y \left (x \right )+1}}{x} = 0\right \}\]