Question

How do you graph and find the discontinuities of `(x^2-1)/(x^2+4)`?

Answer 1

I think you meant `(x^2-1)/(x^2-4)`??

Your graph is continuous in the real number line.

Explanation:

graph{(x^2-1)/(x^2+4) [-5.55, 5.55, -2.773, 2.776]}