Question 460631
The rational expression will be undefined if the bottom half of the expression is equal to zero as we can not divide anything by zero.

there when m = 2 or m = -2

The graph below shows this:

If we grapth the expression we can see this is true:

{{{ graph( 300, 200, -10, 10, -10, 10, (x^3-3x)/(x^2-4)) }}}