(2/7)²=
(1/2)⁻³=
(-1/8)⁻²=
(7/6)²=
(-3/5)⁻³=
(8/9)²=
(-2)⁻⁵=
(-2/5)³=
(-11/2)⁻²=
(-7)⁻²=
4/49
8
64
4/121
-8/125
-1/32
-125/27
64/81
1/49
49/36