Lim x стремится к -4, x^2-16/x+4
Lim x-> - 4 (x^2 - 16)/(x + 4) = 0/0 lim x-> - 4 ((x - 4)*(x + 4))/(x + 4) = lim x-> - 4 (x - 4) = - 4 - 4 = - 8