\[ -a y(x)-x y'(x)+x y''(x)=0 \] ✓ Mathematica : cpu = 0.0340652 (sec), leaf count = 36
\[\left \{\left \{y(x)\to c_2 G_{1,2}^{2,0}\left (-x\left |\begin {array}{c} 1-a \\ 0,1 \\\end {array}\right .\right )+c_1 x \, _1F_1(a+1;2;x)\right \}\right \}\] ✓ Maple : cpu = 0.114 (sec), leaf count = 23
\[ \left \{ y \left ( x \right ) =x \left ( {{\sl U}\left (a+1,\,2,\,x\right )}{\it \_C2}+{{\sl M}\left (a+1,\,2,\,x\right )}{\it \_C1} \right ) \right \} \]