Question

(-2)^x = 8⁷:8³..Giúp mk vơi ạ !! Mk cảm ơn !! =))

Answer 1

\(\left(-2\right)^x=8^4=\left(-2\right)^{12}\Rightarrow x=12\)

Answer 2

\(\Leftrightarrow\left(-2\right)^x=8^4=2^{12}\)

=>x=12

Answer 3

`=> (-2)^x = 8^4`

`=> (-2)^x = 2^12`.

`=> x = 12`.

Answer 4

`(-2)^x = 8^7 : 8^3`

`(-2)^x = 8^(7-3)`

`(-2)^x = 8^4`

`(-2)^12= 8^4`

`=> x = 12`