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Given identity :

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$\"image\"$

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Left Hand side :

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$\"image\"$

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Rationalize with x² at 1

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$\"image\"$

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$\"image\"$

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Rewrite the expression with common denominator x².

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$\"image\"$

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$\"image\"$

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$\"image\"$

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So given identity is proved

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$\"image\"$

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