Giải giúp tớ với ạ , tớ cảm ơn câc bn nhìu

1) `(3/4)^5 * x = (3/4)^7`

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

`x = (3/4)^2`

`x = 9/16`

Vậy `x = 9/16`

2) `(2/3)^2 * x = (2/3)^4`

`x = (2/3)^4 : (2/3)^2`

`x = (2/3)^2`

`x = 4/9`

Vậy `x = 4/9`

3) `(-2/5)^2 * x = (-2/5)^4`

`x = (-2/5)^4 : (-2/5)^2`

`x = (-2/5)^2`

`x = 4/25`

Vậy `x = 4/25`

4) `x : (2/3) = (2/3)^2`

`x = (2/3)^2 * (2/3)`

`x = (2/3)^3`

`x = 8/27`

Vậy `x = 8/27`

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

`x = (-1/2) * (-1/2)^3`

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

`x = 1/16`

Vậy `x = 1/16`

6) `x : (-9/5)^7 = (-9/5)^8`

`x = (-9/5)^8 * (-9/5)^7`

`x = (-9/5)^15`

Vậy `x = (-9/15)^15`

7) `(-5/9)^10 : x = (-5/9)^8`

`x = (-5/9)^10 : (-5/9)^8`

`x = (-5/9)^2`

`x = 25/81`

Vậy `x = 25/81`

8) `(-1/3)^2 : x = (1/3)^4`

`(1/3)^2 : x = (1/3)^4`

`x = (1/3)^2 : (1/3)^4`

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

`x = 3^2`

`x = 9`

Vậy `x = 9`

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

`(4/5)^5 : x = (4/5)^4`

`x = (4/5)^5 : (4/5)^4`

`x = 4/5`

Vậy `x = 4/5`