Question

\(\left(\dfrac{4}{5}\right)^5.x=\left(\dfrac{4}{5}\right)^7\)

Answer 1

\(\left(\dfrac{4}{5}\right)^5.x=\left(\dfrac{4}{5}\right)^7\)

\(x=\left(\dfrac{4}{5}\right)^7:\left(\dfrac{4}{5}\right)^5\)

\(x=\left(\dfrac{4}{5}\right)^2\)

\(x=\dfrac{16}{25}\)

Vậy \(x=\dfrac{16}{25}\)

Answer 2

`(4/5)^5 . x = (4/5)^7`

`=>          x = (4/5)^7 : (4/5)^5`

`=>          x = (4/5)^2`

`=>          x = 16/25`

Answer 3

\(\left(\dfrac{4}{5}\right)^5.x=\left(\dfrac{4}{5}\right)^7\\ =>x=\left(\dfrac{4}{5}\right)^7:\left(\dfrac{4}{5}\right)^5=\left(\dfrac{4}{5}\right)^{7-5}=\left(\dfrac{4}{5}\right)^2\\ =>x=\dfrac{16}{25}\)

Answer 4

\(\left(\dfrac{4}{5}\right)^5.x=\left(\dfrac{4}{5}\right)^7\)

\(x=\left(\dfrac{4}{5}\right)^7:\left(\dfrac{4}{5}\right)^5\)

\(x=\dfrac{4}{5}^2=\dfrac{16}{25}\)