Jika f(x)=√x-1 dan (f°g)(x)= 2√x-1 maka g(x)= Tolong dijawab kak please lagi butuh:v

(f o g)(x) = 2√(x - 1)
f(g(x)) = 2√(x - 1)
√(g(x) - 1) = 2√(x - 1) =====> kedua ruas dikuadratkan
(g(x) - 1) = 4(x - 1)
g(x) - 1 = 4x - 4
g(x) = 4x - 3