$\"\"$

The exponential equation is $\"\"$ .

Rewrite above equation as $\"\"$ .

Apply one-to-one property of exponential function : $\"\"$ if and only if $\"\"$ .

$\"\"$

$\"\"$ and $\"\"$

The value of $\"\"$ are $\"\"$ .

$\"\"$

The value of $\"\"$ are $\"\"$ .