/ 2 \ |3*x + 12*x| lim |-----------| x->-4+\ 8 + 2*x /
Limit((3*x^2 + 12*x)/(8 + 2*x), x, -4)
= -6
-6
/ 2 \ |3*x + 12*x| lim |-----------| x->-4-\ 8 + 2*x /
-6.0