/ 2\ | -48 + 3*x | lim |-8 - 2*x + ----------| x->4+| 2 | \ x /
Limit(-8 - 2*x + (-48 + 3*x^2)/x^2, x, 4)
/ 2\ | -48 + 3*x | lim |-8 - 2*x + ----------| x->4+| 2 | \ x /
-16
= -16
/ 2\ | -48 + 3*x | lim |-8 - 2*x + ----------| x->4-| 2 | \ x /
-16
= -16
= -16