Question

3^x-3^(x-2)=A*3^x

solve for A

Answer 1

`a=(8)/(9)`

Explanation:

`3^x-3x^(x-2) =a3^x`

Divide both sides by
`3^x`:

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

Simplify:

`3^0-3^(-2)=a\\a=1-(1)/(9) \\a=(8)/(9)`