Пошаговое объяснение:
1) (2 1/4)² = (9/4)² = 81/16 = 5 1/16
2) (1 1/2)² = (3/2)² = 9/4 =
2 1/4
3) 5 1/16 - 2 1/4 = 4 17/16 - 2 4/16 = 2 13/16
4) 2 13/16 * 2 2/5 = 45/16 * 12/5 = 9/4 * 3/1 = 27/4 = 6 3/4
5) (4 3/5 - 2 7/10)³ = (4 6/10 - 2 7/10)³ = (46/10 - 27/10)³ = (19/10)³ = 6859/1000 =
6 859/1000
5) 6 3/4 + 6 859/1000 =
6 750/1000 + 6 859/1000 = 12 1609/1000 = 13 609/1000 = 13,609
