Function arithmetic

f(x)= x    g(x)= x+1
(f+g)(x) = (f+g)(2)= f(2)+g(2)=
(f-g)(x) = (f-g)(2)= f(2)-g(2)=
(g-f)(x) = (g-f)(2)= g(2)-f(2)=
(fg)(x) = (fg)(2)= f(2)g(2)=
(f/g)(x) = (f/g)(2)= f(2)/g(2)=
(g/f)(x) = (g/f)(2)= g(2)/f(2)=

f(x)= x    g(x)= x2
(f+g)(x) =
(f-g)(x) =
(g-f)(x) =
(fg)(x) =
(f/g)(x) =
(g/f)(x) =

f(x)= 2x-3    g(x)= -4x+5
(f+g)(x) =
(f-g)(x) =
(g-f)(x) =
(fg)(x) =
(f/g)(x) =
(g/f)(x) =