tolong bantu soal di atas tersebut makasih

(1/81)^(3/4) = (1/3)^4(3/4) = (1/3)^3 = 1/27

(2^3)^4 . (2^3)^-5 = 2^12 . 2^-15 = 2^(12 - 15) = 2^-3 = 1/2^3 = 1/8

^ = pangkat