\[ a y(x)+b x^n+x y'(x)=0 \] ✓ Mathematica : cpu = 0.0154967 (sec), leaf count = 25
\[\left \{\left \{y(x)\to c_1 x^{-a}-\frac {b x^n}{a+n}\right \}\right \}\]
✓ Maple : cpu = 0.009 (sec), leaf count = 23
\[ \left \{ y \left ( x \right ) =-{\frac {b{x}^{n}}{n+a}}+{x}^{-a}{\it \_C1} \right \} \]