$\"\"$

(a)

The expression is $\"\"$ .

Factorize the denominator.

$\"\"$

$\"\"$ is a linear factor repeated 3 times, hence write three partial fractions.

$\"\"$ is square factor, not repeated, so write partial fraction with a linear numerator.

$\"\"$

The partial fraction decomposition of the expression is $\"\"$ .

$\"\"$

(b)

The expression is $\"\"$ .

Factorize the denominator.

$\"\"$

Using partial fractions formula $\"\"$ .

$\"\"$

The partial fraction decomposition of the expression is $\"\"$ .

$\"\"$

(a)

The partial fraction decomposition of the expression is $\"\"$ .

(b)

The partial fraction decomposition of the expression is $\"\"$ .