$\"\"$

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The expression is $\"\"$ .

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Step 1:Find one half of $\"\"$ ,the coefficient of $\"\"$ .

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Find one half of $\"\"$ is $\"\"$ .

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Step 2: Square the result in Step 1.

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$\"\"$ .

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Step 3: Add the result of step 2 to $\"\"$ .

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$\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$

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