diketahui f(x) = akar x-4 dan (gof)(x)= x-9. Rumus fungsi g(x) adalah...

gof(x) = x - 9
g(√x-4) = x - 9
p = √x - 4
p² = x - 4
p² + 4 = x
g(p) = p² + 4 - 9
g(p) = p² - 5
g(x) = x² - 5