2. Evaluate the following limits, if they exist. Show all work. [2x2+1 a) lim x+2 V 3x-2 2x2+3x+1 b) lim x--1 x2–2x-3 Vx2 +9-5 c) lim X--4 X+4 d) lim (Vati - ) V6-x - 2 e) lim *-2 3-3-1