Question

tìm x

3\(^{2x-1}\)= 243

Answer 1

`3^{2x-1}=243`

`->3^{2x-1}=3^{5}`

`->2x-1=5`

`->x=3`

Answer 2

\(3^{2x-1}=243\Leftrightarrow3^{2x-1}=3^5\Leftrightarrow2x-1=5\Leftrightarrow x=3\)

Vậy x = 3

Answer 3

3^2x-1=243

3^2x-1=3^5

2x-1=5

x=3

Answer 4

Ta có: \(3^{2x-1}=243\)

\(\Leftrightarrow2x-1=5\)

hay x=3

Answer 5

\(3^{2x-1}=243\\ \Leftrightarrow3^{2x-1}=3^5\\ \Leftrightarrow2x-1=5\\ \Leftrightarrow x=3\)

Answer 6

\(\Rightarrow\)2x=5+1

\(\Rightarrow\)2x=6

\(\Rightarrow\)x=6:2

\(\Rightarrow\)x=3

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