Diberikan fungsi f(x)= x-1 dan g(x) x²+1 .tentukan fog dan gof​

(fog)(x) = f(g(x)) = (x² + 1) – 1

= x²

(gof)(x) = g(f(x)) = (x – 1)² + 1

= x² – 2x + 1 + 1

= x² – 2x + 2