$\"\"$

Observe the graph.

The first graph has a vertical asymptote at $\"\"$ , which means the rational function is undefined at $\"\"$ .

The second graph has a vertical asymptote at $\"\"$ , which means the rational function is undefined at $\"\"$ .

(I)

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

$\"\"$

Rewrite the expression into partial fraction.

$\"\"$ .

The function is undefine at $\"\"$ and $\"\"$ .

Therefore the correct answer is $\"\"$ .

$\"\"$

The answer is shown $\"\"$