/ _______ _______\ lim \3 - \/ 5 + x - \/ 5 - x / x->4+
Limit(3 - sqrt(5 + x) - sqrt(5 - x), x, 4)
-1
= -1
/ _______ _______\ lim \3 - \/ 5 + x - \/ 5 - x / x->4-
-1.0