Odpowiedź :
Odpowiedź:
(2 7/10 - 11/5)^2 :4 = (27/10-22/10)^2 * 1/4 = (5/10)^2 *1/4 = (1/2)^2 *1/4 = 1/4 * 1/4 = 1/16
1 1/3 : 2/5 = 4/3 * 5/2 = 10/3 = 3 1/3
15 * 5 1/3 = 15 * 16/3 = 80
2 1/3 * 1 5/7 = 7/3 * 12/7 = 12/3 = 4
6 1/4 :15 = 25/4 * 1/15 = 5/12
4 2/7 : 2 2/9 = 30/7 : 20/9 = 30/7 * 9/20 = 2/7 * 9/2 = 27/14 = 1 13/14
Szczegółowe wyjaśnienie:
Odpowiedź:
(2 i 7/10 - 1 i 1/5)² : 4 = (2 i 14/20 - 1 i 4/20)² : 4 = (1 i 10/20)² : 4 = 900/400 * 1/4 = 225/400 = 9/16
1 i 1/3 : 2/5 = 4/3 * 5/2 = 10/3 = 3 i 1/3
15 * 5 i 1/3 = 15 * 16/3 = 240/3 = 80
2 i 1/3 * 1 i 5/7 = 7/3 * 12/7 = 4
6 i 1/4 : 15 = 25/4 * 1/15 = 5/12
4 i 2/7 : 2 i 2/9 = 30/7 : 20/9 = 30/7 * 9/20 = 27/14 = 1 i 13/14