Question

3 mũ x-2=27

Answer 1

`3^(x-2)=27`

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

`x-2=3`

`x=3+2`

`x=5`

Answer 2

\(3^{x-2}=27 \)
\(\Leftrightarrow3^{x-2}=3^3\)
\(\Leftrightarrow x-2=3\Leftrightarrow x=5\)
Vậy x=5

Answer 3

\(3^{x-2}=27< =>3^{x-2}=3^3< =>x-2=3< =>x=3+2< =>x=5\)

Answer 4

`3^(x -2) =27`

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

`=>x-2=3`

`=>x=3+2`

`=>x=5`

Vậy `x=5`

Answer 5

`3^(x-2)=27`

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

`=> x-2=3`

`=> x=3+2`

`=> x=5`

Vậy `x=5`