$\"\"$

Mika is correct answer, since the function is $\"\"$ .

If $\"\"$ is a rational zero, then $\"\"$ is a factor of $\"\"$ and $\"\"$ is a factor of $\"\"$ .

Here, $\"\"$ and $\"\"$ .

Write the possible value of $\"\"$ in simplest form.

$\"\"$ and $\"\"$ .

Here, Doug is consider the $\"\"$ coefficent $\"\"$ , then its write the possible factors because its wrong answer. $\"\"$

Mika is correct answer.