Question

How do you solve `9^x=3^(x-2)`?

Answer 1

`x=-2`

Explanation:

We got: `9^x=3^(x-2)`

And so:

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

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

`2x=x-2`

`2x-x=-2`

`x=-2`