jika f(x)=x-5 dan g(x) =x²-1 maka (g o f)(x)=

langsung aja y

(gof)(x) = g{f(x)}

= f(x)² - 1
= (x-5)² - 1
= x² - 10x + 25 - 1
= x² - 10x + 24

semoga berguna +_+