x - 3 -------------------- / 2 \ \x + 3*x/*2*(x + 3)
-3 + x -------------------- / 2 \ (3 + x)*\2*x + 6*x/
0.5*(-3.0 + x)/((3.0 + x)*(x^2 + 3.0*x))
-3 + x ------------ 2 2*x*(3 + x)
-3 + x ------------------- 3 2 2*x + 12*x + 18*x
x - 3 -------------------- / 2 \ 2*(x + 3)*\x + 3*x/