(a)
\The expression is
.
The denominator has two distinct linear factors.
\The partial fraction decomposition of the expression is
.
(b)
\The expression is
.

Factorize the denominator.
\
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
.