Question

lim x tende -4 (x^2-16/(x-4)^2)

Answer 1

Lim (x^2-16)/(x-4)^2)
x--> -4

Lim (x²-4²)/(x-4)²
x--> -4

Lim (x-4)*(x+4)/(x-4)²
x--> -4

Lim (x+4)/(x-4)   = (-4+4)/(-4-4)  =0 /(-8) = 0
x--> -4