Find the value that makes 2x+4x2−4\frac{2x + 4}{x^2 - 4}x2−42x+4 undefined.
x=−2x = -2x=−2 only
x=2x = 2x=2 only
x=4x = 4x=4
x=−2x = -2x=−2 or x=2x = 2x=2