$\"\"$

The polynomial function is $\"\"$ .

The leading coefficient is 12 and the constant term is 9.

Possible rational zeros $\"\"$

$\"\"$

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

Use synthetic division, determine that $\"\"$ is a rational zero or not.

$\"\"$

The factor form of f(x) is $\"\"$ . $\"\"$

Find the zeros of the function by equating $\"\"$ to zero. \ \

$\"\"$

$\"\"$ .

Thus, the zeros are $\"\"$ .

$\"\"$

The real zeros of f(x) are $\"\"$ .