(2/9) mũ 5 . (-27/4) mũ 5 (-7/2).(-2/7) 7 mũ 8 . (-1/7) mũ 8 (-3/4) mũ 4. (-4/9) mũ 4 (-5)mũ 7. (1/5) mũ 7 (4/3) mũ 10 . (-3/4) * tính nhanh nha*

`(2/9)^5 . ((-27)/4)^5`

`= (2/9 . (-27)/4)^5`

`= (-3/2)^5`

`= 243/32`

_______________________________

`(-7/2).(-2/7)`

`= (-7.(-2))/(2.7)`

`= 1`

_______________________________

`7^8 . (-1/7)^8`

`= (7 . (-1)/7)^8`

`= (-1)^8`

`= 1`

_______________________________

`(-3/4)^4 . ((-4)/9)^4`

`= (-3/4 . ((-4)/9)^4`

`= (1/3)^4`

`= 1/81`

_______________________________

`(-5)^7 . (1/5)^7`

`= (-5 . 1/5)^7`

`= (-1)^7`

`= -1`

_______________________________

`(4/3)^10 . ((-3)/4)^(10)`

`= (4/3 . (-3)/4)^(10)`

`= (-1)^(10)`

`= 1`