$\"\"$

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The integral is $\"\"$ .

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Factorize the denominator.

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Consider $\"\"$ .

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$\"\"$ is a factor of above polynomial.

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$\"\"$

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$\"\"$

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$\"\"$

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Partial decomposition:

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$\"\"$

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$\"\"$

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Compare $\"\"$ coefficients.

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$\"\"$

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$\"\"$ .

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Substitute $\"\"$ in the expression (1).

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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Compare $\"\"$ coefficients in the expression (1).

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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

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$\"\"$ .