Ответ:

Пошаговое объяснение:

(1. 1/2)² = (3/2)² = 9/4

(3. 1/4)² = (13/4)² = 169/16

(3. 2/3)² = (11/3)² = 121/9

(1. 1/5)² = (6/5)² = 36/25

9/4 : 169/16 : 121/9 : 36/25 =

9/4 * 16/169 * 9/121 * 25/36 =

9/1 * 4/169 * 1/121 * 25/4 =

36/169 * 25/484 = 9/169 * 25/121 = 225/20449