\[ (a+x) y'(x)+x^2 y''(x)-y(x)=0 \] ✓ Mathematica : cpu = 0.097122 (sec), leaf count = 26
\[\left \{\left \{y(x)\to \frac {c_2 (a+x)}{a^2}+c_1 x e^{a/x}\right \}\right \}\] ✓ Maple : cpu = 0.018 (sec), leaf count = 19
\[y \relax (x ) = \left (x +a \right ) c_{1}+c_{2} {\mathrm e}^{\frac {a}{x}} x\]