giải giúp em ạ,em cảm ơn

`@HuyenAngg`

`a)` `x : ( -1/2 )^3 = -1/2`

`-> x = -1/2 . ( -1/2 )^3`

`-> x = ( -1/2 )^4`

`-> x = 1/16`

Vậy `x = 1/16` 

`b)` `x . ( 3/5 )^7 = ( 3/4 )^9`

`-> x = ( 3/4 )^9 : ( 3/5 )^7`

`-> x = 3/4 . 3/4 . ( 3/4 )^7 : ( 3/5 )^7`

`-> x = 9/16 . ( 3/4 : 3/5 )^7`

`-> x = 9/16 . ( 5/4 )^7`

`-> x = 703125/262144`

Vậy `x = 703125/262144`

`c)` `( -2/3 )^11 : x = ( -2/3 )^9`

`-> x = ( -2/3 )^11 : ( -2/3 )^9`

`-> x = ( -2/3 )^2`

`-> x = 4/9`

Vậy `x = 4/9`

`d)``x . ( 0,25 )^6 = ( 1/4 )^8`

`-> x . ( 1/4 )^6 = ( 1/4 )^8`

`-> x = ( 1/4 )^8 : ( 1/4 )^6`

`-> x = ( 1/4 )^2`

`-> x = 1/16`

Vậy `x = 1/16`

`e)` `( x + 3/4 )^2 = 0`

`-> x + 3/4 = 0`

`-> x = -3/4`

Vậy `x = -3/4`

`( x + 1/2 )^3 = 1/27`

`-> ( x + 1/2 )^3 = ( 1/3 )^3`

`-> x + 1/2 = 1/3`

`-> x = -1/6`

Vậy `x = -1/6`