$\"\"$

The function is $\"\"$ .

The general form of polynomial function is $\"\"$ ,

where $\"\"$ are real numbers and $\"\"$ is a non negative integer.

Rewrite the polynomial function.

$\"\"$

Simpify the function.

$\"\"$

$\"\"$ .

The variable $\"\"$ is raised to the $\"\"$ power which is a negative integer.

$\"\"$ is not a polynomial function.

$\"\"$

The function $\"\"$ is not a polynomial function.