/ 2 16\ lim |(4 + x) - --| x->0+\ x /
Limit((4 + x)^2 - 16/x, x, 0)
-oo
= -2399.94697600982
/ 2 16\ lim |(4 + x) - --| x->0-\ x /
oo
= 2431.94706372528
-2399.94697600982