$\"\"$

The function is $\"\"$ .

Now find $\"\"$ , at $\"\"$ .

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

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

$\"\"$

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

The result is verified.

$\"\"$

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

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