$\"\"$

The equation is $\"\"$ .

Substitute $\"\"$ in original equation and check whether the equation is true or not.

$\"\"$

$\"\"$ (Product of two same signs is positive)

$\"\"$ (Multiply: $\"\"$ )

$\"\"$ (Add: $\"\"$ )

The equality is true. $\"\"$

Yes, $\"\"$ is the solution of the equation $\"\"$ .