diketahui fungsi f(x)=12x-5,G(x)=5x+7dan h(x)=2x²

(f o g) (x) =f (g(x) )
=12(5x+7)-5
=60x+84-5
=60x+79

(g o f) (x) =g (f(x) )
=5(12x-5)+7
=60x-25+7
=60x-18