4*x + 8 -------*3*x 3 12*x ----------- x + 2
1 -- 2 x
8 + 4*x ------------ 2 4*x *(2 + x)
0.25*(8.0 + 4.0*x)/(x^2*(2.0 + x))
24 + 12*x ------------- 2 12*x *(2 + x)
4*x + 8 ------------ 2 4*x *(x + 2)