$\"\"$

The equation is $\"\"$

Definition of logarithmic function : $\"\"$ if and only if $\"\"$ .

$\"\"$

The above equation is in the form of quadratic equation.

The general form of quadratic equation is $\"\"$

The roots of the quadratic equation is $\"\"$ .

Here $\"\"$

$\"\"$

Hence, $\"\"$

$\"\"$

The solution set is $\"\"$ .