(Fog)(x) = x² - 4 dan f(x) = x + 2 Tentukan g`¹(2) = .... ? Tolong kk adek semua ^_^

(fog)(x) = f{g(x)}
x² - 4 = g(x) + 2
g(x) = x² - 4 - 2
g(x) = x² - 6

y = x² - 6
x² = y + 6
x = √(y + 6)

g`¹(x) = √(y + 6)
g`¹(2) = √(2 + 6)
g`¹(2) = √8
g`¹(2) = 2√2

semoga berguna +_+