Respuesta :

gmany
[tex]f(x)=x^2-x+8[/tex]

f(9) - substract x = 9 to the equation of the function:

[tex]f(9)=9^2-9+8=81-9+8=80\\\\f(-6)=(-6)^2-(-6)+8=36+6+8=50\\\\f(0)=0^2-0+8=8[/tex]