Hey all here is an easy calc. question but i can't seem to understand how to answer it

Question:

True or False? If the statement is true, explain why; if it is false, then explain how to determine the value of $\displaystyle c$ and then, evaluate the limit.

There is no number $\displaystyle c$ such that $\displaystyle \lim_{x \rightarrow\ -1} \frac{x^2 + c·x - c + 2}{x^2 - 1}

$ exists.

The Part that I need help with:

I know that answer is false but how do i evaluate $\displaystyle c$?