dijawab ya bang kak tolong .....

mohon koreksi...
senang bisa membantu :)

f(n)/g(n) = (2^(n + 2) . 6^(n - 4)) / 12^(n - 1)
= 2^(n + 2) . 6^(n - 4) / (2 . 6)^(n - 1)
= 2^(n + 2) . 6^(n - 4) / 2^(n - 1) . 6^(n - 1)
= 2^(n + 2 - (n - 1)) . 6^(n - 4 - (n - 1))
= 2^(n + 2 - n + 1) . 6^(n - 4 - n + 1)
= 2^3 . 6^-3
= 2^3 / 6^3
= (2/6)^3
= (1/3)^3
= 1/27

^ = pangkat