$\"\"$

The equation is $\"\"$ .

The product of two same signs is positive.

$\"\"$

Subtract 9 from each side.

$\"\"$

$\"\"$ . $\"\"$

To check the solution, substitute the value of $\"\"$ in the original equation $\"\"$ .

$\"\"$

$\"\"$ .

The statement is true, so the value of $\"\"$ is the solution of original equation.

$\"\"$

The value of $\"\"$ .