X=>0

8. Lim x²-4x+4/x²+x-6
X→2

Substitusi → 0/0

(X-2)(x-2)/(x+3)(x-2)
= x-2/x+3
= 0/3
= 0

9. Substitusi → 0/0

●) Kali kawan sejenis
3x[(√9+x)-(9-x)]/(9+x)-(9-x)
= 3x[(√9+x)-(9-x)]/2x
= 3[(√9+x)-(9-x)]/2
= 3(3-3) / 2
= 0