$\"\"$

The function is $\"\"$ .

The zero is $\"\"$ .

Solve by using factor theorem,

Factor Theorem :

The Factor Theorem states that if $\"\"$ then $\"\"$ is a factor.

If $\"\"$ then $\"\"$ is a factor.

Consider $\"\"$ .

Substitute $\"\"$ in the function of $\"\"$ .

$\"\"$

$\"\"$ .

Therefore, $\"\"$ is not a zero for function $\"\"$ .

$\"\"$

$\"\"$ is not a zero for function $\"\"$ .