nilai x yg memenuhi pers. 3^2x-4 = 1/3 akar 243 adalah... [^(Pangkat)]

3^2x-4 = (1/3)√243
3^2x-4 = (3^-1)(3^5/2)
3^2x-4 = 3^(-1+5/2)
2x - 4 = -1 + 5/2
kalikan 2
4x - 8 = -2 + 5
4x = 3 + 8
x = 11/4

cat : itu (1/3)√243 yah yg dikerjakan
bukan 1 / 3√243