$\"\"$

The function is $\"\"$ .

The Value of $\"\"$ .

Perform synthetic substitution method to evaluate $\"\"$ for $\"\"$ .

$\"\"$

Since the remainder is $\"\"$ , $\"\"$ $\"\"$ .

$\"\"$

Check the function at $\"\"$ at $\"\"$ using direct substitution method :

$\"\"$

The remainder of $\"\"$ at $\"\"$ is $\"\"$ .

Since the remainder is non zero, $\"\"$ is not a solution of the given equation.