1/3pangkat4-1/3pngkat-2+(-3)pngkat-2

(1/3)^4 - (1/3)^-2 + (-3)^-2
= (1/3^4) - (1/3^-2) + (1/-3^2)
= (1/3^4) - (3^2) + (1/3^2)
= 1/81 - 9 + 1/9
= 1/81 - 279/81 + 9/81
= 269/81