Odpowiedź:
(7 - 5 i 2/5) * 1/4 = (6 i 5/5 - 5 i 2/5) * 1/4 = 1 i 3/5 * 1/4 = 8/5 * 1/4 = 2/5
(7/9 - 47/72) : 1 i 1/4 = (56/72 - 47/72) : 1 i 1/4 = 9 * 4/5 = 36/5 = 7 i 1/5
6 * (1 i 1/3)² = 6 * (4/3)² = 6 * 16/9 = 96/9 = 10 i 6/9 = 10 i 2/3
(5/7)² : 5/7 = 25/49 * 7/5 = 5/7
(1/3 - 1/4)² = (4/12 - 3/12)² = (1/12)² = 1/144
(2/5)² + 4 i 1/2 * 2 i 2/3 = 4/25 + 9/2 * 8/3 = 4/25 + 14 = 14 i 4/25
5 * (1/2)² + 15 * (1/3)² = 5 * 1/4 + 15 * 1/9 = 5/4 + 15/9 = 45/36 + 60/36 = 105/36 = 2 i 33/36 = 2 i 11/12
1/9 - (5/6 - 2/3)² = 1/9 - (5/6 - 4/6)² = 1/9 - (1/6)² = 1/9 - 1/36 = 4/36 - 1 i 36 = 3/36 = 1/13
