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Step 1 :
\The expression is
Rewrite the expression :
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Let
then 
Substitute
and
in above equation.

Step 2 :
\Write the expression
in partial fraction.

Compare the numerators.
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Equate u coefficients and equate constants.
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Multiply equation (1) by 2 and then subtract two equations.
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Substitute
in equation 2.

Substitute
in equation 2.

Substitute
and
in equation 1.

Apply integration with respect u in each side.
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Step 3 :
\Simplification :
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Use the formula : 

Substitute
and
in above equation. 
The value of the integration :
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Solution :
\