/ 2\ | (-1 + x) | lim |-1 + ---------| x->1+| 2 | \ x /
Limit(-1 + (-1 + x)^2/x^2, x, 1)
-1
= -1.0
/ 2\ | (-1 + x) | lim |-1 + ---------| x->1-| 2 | \ x /
-1.0