Tính [( -2)^2)]^3

1, [ ( -2) ^2 ) ]^3 
2 , [ ( - 2/3 ) ^ 2 ] ^ x
3, [ ( - 1/2 ) ^ x ] ^ 3
4, ( 2 ^ 3 ) ^ x 
5 , ( 7 ^ x ) ^ 2
6, [ ( 1/2 ) ^ x ) ] - 2
7, [ ( 1/2 ) ^ -x ] ^4