. . . . (x-1)(x+1) . . . . . . . . X-1
Lim. . -------------- = lim ----------- =
x->-1 . (x-3)(x+1) . . x->-1. X-3
=(-2)/(-4)=1/2
. . . . (3x+2)(x-1) . . . . . . . 3x+2
Lim ----------------- = lim ------------- =
x->1. (x-1)(4x-1) . . . . x->1. . 4x-1
= 5/3