Step 1:

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The function is $\"\"$ .

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Find $\"\"$ .

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Substitute $\"\"$ in the function.

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$\"\"$

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Find $\"\"$ .

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Substitute $\"\"$ in the function.

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$\"\"$

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$\"\"$

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Find the difference quotient $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Solution:

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The solutions are $\"\"$ , $\"\"$ and $\"\"$