Step 1:

The partial fraction is $\"\"$ .

The partial fraction decomposition :

$\"\"$

Multiply each side by $\"\"$ .

$\"\"$

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

$\"\"$

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

$\"\"$

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

$\"\"$

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

$\"\"$

Compare constants on each side.

$\"\"$ equation (4)

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

$\"\"$

Substitute $\"\"$ in the partial fraction decomposition.

$\"\"$

Solution :

$\"\"$ .