Question

mọi người giúp mik câu này với

(1)/(5))^(2x-1)=(1)/(125)

 

Answer 1

`@` `\text {Ans}`

`\downarrow`

\(\left(\dfrac{1}{5}\right)^{2x-1}=\dfrac{1}{125}\)

`=>`\(\left(\dfrac{1}{5}\right)^{2x-1}=\left(\dfrac{1}{5}\right)^3\)

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

`=> 2x = 3 + 1`

`=> 2x = 4`

`=> x = 4 \div 2`

`=> x = 2`

Vậy, `x = 2.`

`@` `\text {Kaizuu lv uuu}`