\"\"

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The integral is \"\".

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Rewrite the integral as \"\".

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\"\"

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\"\"

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\"\"

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Consider \"\".

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Evaluate the integral by completing the square method.

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\"\"

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Apply formula :\"\".

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Here \"\".

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\"\"

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\"\".

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\"\"

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Substitute \"\" in equation (1).

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\"\"

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\"\"

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\"\".