Bài 1: (2,0 điểm) Thực hiện phép tính: a) (2$\frac{5}{6}$ + 1$\frac{4}{9}$) : (10$\frac{1}{12}$ - 9,5) b) $\frac{32^{3}.9^{5}{8^{3}.6^{6}}$ c) $\sqrt{64}$ + 2$\sqrt{(-3)²}$ - 8.$\sqrt{\frac{25}{16}}$ d) |$\frac{1}{-5}$| - $\frac{(-2)²}{|-5|}$ - $\frac{|2|}{5}$

a) `(2 5/6 + 1 4/9) : (10 1/12 - 9,5)`

`= (17/6 + 13/9) : (121/12 - 114/12)`

`= (51/18 + 26/18) : 7/12`

`= 77/18 . 12/7`

`= 22/3`

b) `(32^5 . 9^3)/(8^3.6^6)`

`= ((2^5)^5 . (3^2)^3)/((2^3)^3 . 2^6 . 3^6)`

`= (2^25 . 3^6)/(2^9 . 2^6 . 3^6)`

`= (2^25)/(2^15)`

`= 2^10`

`= 1 024`

c) `sqrt{64} + 2 sqrt{(-3)^2} - 8 . sqrt{25/16}`

`= 8 + 2 . 3 - 8 . 5/4`

`= 8 + 6 - 10`

`= 4`

d) `|1/(-5)| - ((-2)^2)/|-5| - |2|/5`

`= 1/5 - 4/5 - 2/5`

`= -5/5`

`= -1`