Question

  

Answer 1

`#3107.101107`

`(1/3)^x = 1/243`

`=>(1/3)^x=(1/3)^5`

`=>x=5`

Vậy, `x=5.`

Answer 2

\(\left(\dfrac{1}{3}\right)^x=\dfrac{1}{243}\)

\(=>\left(\dfrac{1}{3}\right)^x=\left(\dfrac{1}{3}\right)^5\)

\(=>x=5\)

Answer 3

(1_/3)^x = 1_/243

(1_/3)^x = (1/3)⁵

x = 5

--tho--