bentuk sederhana dari (81^2/3)^-3/4

Kelas 9 Matematika
Bab Akar dan Pangkat

^ = pangkat

(81^(2/3))^(-3/4)
= 81^(2/3 . -3/4)
= 81^(-2/4)
= 81^(-1/2)
= 1/(81^(1/2))
= 1/9

(81^2/3)^-3/4
(81^-3/2 / 3^-3/4)
3^3/4 / 3^4.3/2
3^3/4 / 3^6
3^3/4-6
3^-21/4
1 / 3^21/4