\[ (x-3) y''(x)-(4 x-9) y'(x)+(3 x-6) y(x)=0 \] ✓ Mathematica : cpu = 0.0622467 (sec), leaf count = 42
\[\left \{\left \{y(x)\to \frac {1}{8} c_2 e^{3 x-9} \left (4 x^3-42 x^2+150 x-183\right )+c_1 e^{x-3}\right \}\right \}\] ✓ Maple : cpu = 0.032 (sec), leaf count = 30
\[\{y \left (x \right ) = c_{1} {\mathrm e}^{x}+c_{2} \left (4 x^{3}-42 x^{2}+150 x -183\right ) {\mathrm e}^{3 x}\}\]