1) (2/3)2 = 2/3 • 2/3 = 4/9
2) (1/5)3 = 1/5 • 1/5 • 1/5 = 1/125
3) ( 1 4/7)2 = 11/7 • 11/7 = 121/49 = 2 23/49
4) (1 1/2)3 = 3/2 • 3/2 • 3/2 = 27/8 = 3 3/8