WeBWorK Standalone Renderer

Part 1: Identifying vertical asymptotes

What are the vertical asymptotes of $\displaystyle{f(x) = {\frac{-5x^{2}}{x^{2}-9}} }$ ? Your answer should be a number, a list of numbers separated by commas, or None.

Vertical asymptotes at $x =$

Part 2: Limits at vertical asymptotes

You can earn partial credit on this problem.