$\text{Đáp án & Giải thích các bước giải:}$
`a)` `9.3^2.\frac{1}{81}.27`
`=(9.3^2.\frac{1}{81}).27`
`=(81.\frac{1}{81}).27`
`=1.27`
`=27`
`b)` `4.32:(2^3.\frac{1}{16})`
`=2^2 . 2^5:(2^3.\frac{1}{16})`
`=2^{2+5}:(2^3.\frac{1}{16})`
`=2^7:(2^3.\frac{1}{16})`
`=2^7:(\frac{2^3}{2^4})`
`=2^7:(\frac{1}{2})`
`=2^7.(\frac{2}{1})`
`=\frac{2^8}{1}`
`=2^8`
`= 256`
`c)` `3^4 3^5:\frac{1}{27}`
`=3^{4+5}:\frac{1}{27}`
`=3^9:\frac{1}{27}`
`=3^9:\frac{1}{3^3}`
`=3^9.\frac{3^3}{1}`
`=\frac{3^{9+3}}{1}`
`=3^12`
`=531 441`
`d)` `frac{2^2. 4.32}{(-2)^2. 2^5}`
`=frac{2^2. 2^2 .2^5}{(-2)^2. 2^5}`
`=frac{2^2}{(-1)}`
`=(-2)^2`
`=4`
