xokyno

1) Б

[tex]f(x)=\frac{x-2}{x^2+1} \\f(0)=\frac{0-2}{0^2+1}\\f(0)=\frac{-2}{0+1}\\f(0)=\frac{-2}{1}\\f(0)=-2[/tex]

2) Г

3) В