Question

if f and g is function Z to Z, f(x)=x-3, g(x)=x+3 then find (f•g)(x)=?​

Answer 1

Answer:

(x-3)(x+3)

x(x+3)-3(x+3)

x2 +3x-3x-9

x2-9

Answer 2

Step-by-step explanation:

f(x)=x-3 ; g(x)=x+3 ; (f•g)(x)=f(g(x)) = f(x+3) = (x+3)-3=x