Đáp án+Giải thích các bước giải:

 `a)`

`9.3^{2}. 1/81. 27`

`=\frac{3^{2}.3^{2}.3^{3}}{3^{4}}`

`=\frac{3^{4}.3^{3}}{3^{4}}`

`=3^{3}`

`b)`

`\frac{2^{2}.4.32}{(-2)^{2}.2^{5}}`

`=\frac{2^{2}.2^{2}.2^{5}}{2^{2}.2^{5}}`

`=2^{2}`

`c)`

`4.16:(2^{3}. 1/16)`

`=(2^{2}.2^{4}):(\frac{2^{3}}{2^{4}})`

`=2^{2+4}: 1/2`

`=2^{6}. 2`

`=2^{6+1}`

`=2^{7}`