The function is $\"\"$ .

The degree of the polynomial function $\"\"$ is $\"\"$ .

So there are possible real zeros are $\"\"$ .

Number of turning points are $\"\"$ .

Determine the real zeros by factoring:

$\"\"$

Take out common factors.

$\"\"$

Apply the zero product property.

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

Real zeros are $\"\"$ and $\"\"$ .

Number of possible real zeros are $\"\"$ , turning points are $\"\"$ .

Real zeros are $\"\"$ and $\"\"$ .