Degree of the function is $\"\"$ .

Third degree polynomial function is in the form $\"\"$ .

The polynomial function has a real zeros at $\"\"$ and $\"\"$ .

If $\"\"$ is a real zero of a polynomial function $\"\"$ , then $\"\"$ is a factor of $\"\"$ .

Therefore, $\"\"$ and $\"\"$ are factors of $\"\"$ .

Thus, the polynomial function is $\"\"$ .

$\"\"$ .

The polynomial function contains $\"\"$ intercept $\"\"$ , therefore $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

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

$\"\"$ .

Therefore, the polynomial function is $\"\"$ .

The polynomial function is $\"\"$ .