/ 2\ | -8 + 3*x | lim |3*x - ---------| x->0+\ 4 + x /
Limit(3*x - (-8 + 3*x^2)/(4 + x), x, 0)
2
= 2
/ 2\ | -8 + 3*x | lim |3*x - ---------| x->0-\ 4 + x /
2.0