$\"\"$

The equation is $\"\"$ .

Solve the equation.

$\"\"$ (Original equation)

$\"\"$ (Square on each side)

$\"\"$ (Cancel square and root terms)

$\"\"$ (Evaluate power $\"\"$ )

$\"\"$ (Multiply each side by negative one)

Therefore, the value of $\"\"$ is $\"\"$ .

$\"\"$

Check the solution for $\"\"$ -values:

$\"\"$ (Original equation)

$\"\"$ (Substitute $\"\"$ in the equation)

$\"\"$ (Multiply)

$\"\"$ (Substitute: $\"\"$ )

Therefore, the value of $\"\"$ is $\"\"$ satisified the equation.

$\"\"$

The value of $\"\"$ is $\"\"$ .