$$\text { Find the limit } \lim _ { x \rightarrow 3 } \frac { x ^ { 2 } + x - 12 } { x ^ { 2 } - 9 } \text {, if it exists. }$$

Short Answer

$$\text { Find the limit } \lim _ { x \rightarrow 3 } \frac { x ^ { 2 } + x - 12 } { x ^ { 2 } - 9 } \text {, if it exists. }$$