Question

tìm x: \(9^x\):\(3^x\)=3

Answer 1

x=1

(9¹:3¹=3)

Answer 2

9^x:3^x=3

<=> (9:3)^x=3

<=>3^x=3

<=>3^x=3¹

<=>x=1

Answer 3

`9^x . 3^x=3`

`<=> 3^(2x) . 3^x=3`

`<=> 2x+x= 3`

`<=> 3x=3`

`<=> x= 1`

Answer 4

\(9^x:3^x=3\)
\(\Rightarrow\left(9:3\right)^x=3\)
\(\Rightarrow3^x=3^1\)
\(\Rightarrow x=1\)