Question

3 mũ 2x-1.3=3

giúp mik vs

Answer 1

`3^(2x-1.3)=3`

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

`2x-3=1`

`2x=4`

`x=4/2`

`x=2`

Answer 2

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

`=> 3^(2x-1) = 3 : 3`

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

`=> 3^(2x-1) = 3^0`

`=>    2x-1    = 0`

`=>     2x      = 0  +1`

`=>      2x     = 1`

`=>         x     = 1/2`

Answer 3

3^2.x-1.3=3

=>3^2.x-1=3:3

=>3^2.x-1=1

=>3^2.x-1=3⁰

=>2.x-1=0

=>2.x=1

=>x=\(\dfrac{1}{2}\)

Vậy x=\(\dfrac{1}{2}\)

Answer 4

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

`=> 3^(2x-1)=3:3`

`=> 3^(2x-1)=1`

`=>3^(2x-1)=3^0`

`=> 2x-1=0`

`=> 2x=0+1`

`=> 2x=1`

`=>x=1/2`