$\"\"$

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The function is $\"\"$ .

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Find $\"\"$ :

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Equate the function to $\"\"$ .

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$\"\"$ .

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By using inspection method find value of $\"\"$ .

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Substitute $\"\"$ in above equation.

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$\"\"$

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$\"\"$ is clearly root of the equation.

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Therefore $\"\"$ then $\"\"$ .

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$\"\"$

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Find $\"\"$ :

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Cancellation equations:

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$\"\"$ for every $\"\"$ in domain of $\"\"$ .

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$\"\"$ for every $\"\"$ in domain of $\"\"$ .

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Therefore $\"\"$ .

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$\"\"$

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$\"\"$ and $\"\"$ .