$\"\"$

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Given that $\"\"$

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$\"\"$ Definition of derivative

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$\"\"$

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$\"\"$ $\"\"$

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$\"\"$

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$\"equal$

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$\"equal$

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$\"equal$

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$\"equal$

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$\"f$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in the equation.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ (Evaluate power: $\"\"$ )

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Substitute $\"x$ in the $\"f$ .

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$\"f$

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$\"f$ (Evaluate power: $\"open$ )

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Substitute $\"x$ in the $\"f$ .

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$\"f$

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$\"f$ (Evaluate power: $\"open$ )

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Substitute $\"x$ in the $\"f$ .

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$\"f$

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$\"f$ (Evaluate power: $\"open$ )

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$\"\"$

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$\"\"$ , $\"\"$ , $\"f$ and $\"f$ .