$\"\"$

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The polynomial is $\"\"$ .

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$\"\"$ (Substitute: $\"\"$ for x and 2 for y)

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$\"\"$ (Evaluate powers: $\"\"$ )

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$\"\"$ (Multiply: $\"\"$ )

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$\"\"$ (Add: $\"\"$ ) $\"\"$

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The value of $\"\"$ is 28 when $\"\"$ .