Пожалуйста помогите!
lgz = lg(n^2-s^2) - 2lg(n+s) = lg(n^2-s^2) - lg(n+s)^2 = lg (n^2 - s^2) / (n+s)^2 = lg(n-s)/(n+s)
lgz = lg (n-s)/(n+s)
z = n-s/n+s
lg z = lg((n-s)(n+s))-lg(n+s)^2;
lg z = lg((n-s)(n+s)/(n+s)^2;
z = (n-z)/(n+s)