tolong dibantu ya no 1

1. (27²)^-2/3 = ( (3³)²)^-2/3 = (3^6)^-2/3= 3^-4 = 1 / 3^4 = 1/81
    (16^-2)^3/4 = ((2^4)^-2)^3/4= (2^-8)^3/4= 2^-6= 1/ 2^6= 1/ 64

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