Step 1:

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The expression is $\"\"$

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Substitute $\"\"$

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$\"\"$

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$\"\"$

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Rewrite the expression as $\"\"$ .

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$\"\"$

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Substitute $\"\"$

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$\"\"$

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$\"\"$

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Substitute back $\"\"$ .

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$\"\"$ .

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Substitute back $\"\"$ .

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$\"\"$ .

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$\"\"$

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Solution:

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$\"\"$

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