\[ y'(x)=\frac {x^5 \sqrt {4 x^2 y(x)+1}+\frac {1}{2}}{x^3} \] ✓ Mathematica : cpu = 0.203948 (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 = 0.523 (sec), leaf count = 26
\[ \left \{ {\it \_C1}-{\frac {1}{x}\sqrt {4\,{x}^{2}y \left ( x \right ) +1}}+{\frac {{x}^{4}}{2}}=0 \right \} \]