1) a. lim x -> -2 = (15(-2) - 37) = (-30-37) = -67

b. lim z -> -7 = (z³-3z²+2z-15) = (-7)³-3(-7)²+2(-7)-15 = -343-147-14-15 = -519

c. lim x -> 3 = (zx²+2zx-15z) = z(3)²+2z(3)-15z = 9z+6z-15z = 0

d. lim y -> 2 = √y²-2y+4 = √2²-2.2+4 = √4 = 2

e. lim y -> -9 = (-9)²-16/ (-9)³-2(-9)² = 81 - 16 / -729 - 162 = 65/-891

f. lim z -> 1 = √z²+12z-4 = √1²+12.1-4 = √9 = 3

2) a. 3 / (-∞)³ = 0

b. 12 / (∞)^4 = 0

c. 1/4

f. -∞

semoga bener ya !! aku jawab sebisa aku, koreksi aja kalau ada yang salah yaa.. sama sama belajar. untuk nomer 2 aku pake cara cepat