Chapter 2.2, Problem 19E

One-sided and two-sided limits Let $f(x)=\frac{x^2-25}{x-5}$. Use tables and graphs to make a conjecture about the values of $\underset{x\to 5^{+}}{\lim }f(x)$, $\underset{x\to 5^{-}}{\lim }f(x)$, and $\underset{x\to 5}{\lim }f(x)$ or state that they do not exist.