(-1/2)² ‧ (-2/5)²
(3/4)⁻² ‧ (-4/5)⁻²
(1/4)⁴ ‧ (4/3)⁴
(-1/3)² ‧ (2/5)²
(-3/4)³ ‧ (1/2)³
(-1/6)⁻³ ‧ (36/5)⁻³
25/9
4/225
1/25
1/81
-125/216
-27/512
