$\"\"$

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The polynomial is $\"\"$ .

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$ (Substitute 2 for a)

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$\"\"$ (Evaluate power: $\"\"$ )

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$\"\"$ (Subtract: $\"\"$ ) $\"\"$

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The value of $\"\"$ is $\"\"$ when $\"\"$ .