Step 1:

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The fraction is $\"\"$ .

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$\"\"$

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Partial fraction decomposition :

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore,

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$\"\"$

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Compare constant terms on each side.

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$\"\"$

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Compare x terms on each side.

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$\"\"$

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Substitute $\"\"$ in above equation.

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$\"\"$

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Compare $\"\"$ terms on each side.

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$\"\"$

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Substitute $\"\"$ and $\"\"$ in above equation.

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$\"\"$

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Compare $\"\"$ terms on each side.

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$\"\"$

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Substitute $\"\"$ , $\"\"$ , and $\"\"$ in above equation.

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$\"\"$

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Compare $\"\"$ terms on each side.

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$\"\"$

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Compare $\"\"$ terms on each side.

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$\"\"$

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Compare $\"\"$ terms on each side.

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$\"\"$

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Compare $\"\"$ terms on each side.

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$\"\"$

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Compare $\"\"$ terms on each side.

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$\"\"$

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\