Question

найдите f(0) f(-3) f(-8)​

Answer 1

$f(x)=\frac{x+5}{x-5}\\\\f(0)=\frac{0+5}{0-5}=\frac{5}{-5}=-1\\\\f(-3)=\frac{-3+5}{-3-5}=\frac{2}{-8}=-\frac{1}{4}\\\\f(8)=\frac{8+5}{8-5}=\frac{13}{3}=4\frac{1}{3}$