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The function is $\"\"$ .

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

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

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

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Determine the real zeros by factoring:

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$\"\"$

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Take out common factors.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Apply the zero product property.

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

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

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

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

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