Thực hiện phép tính

thuc hien phep tinh  

1. (-5/6).(-3/5)^2
2. 2022o--1/2
3. (3/4-5/6)^2
4. -3/4.12/-5.(-25/6)
5. (-1/3)2:5/9+(-1)^3
6. 5/2+1/2:(-3/4).4/9-4^2-(-2)^3
7. (-1/2-1/3)^2:((-5/36)-(-5/36)^0)
8. (-6/7+3/7:(-3))-(2/5+(-7/8)^0+3/5:(-3/2))