For what values of xxx is 3x+1x2−4\dfrac{3x+1}{x^2 - 4}x2−43x+1 undefined?
x=2x = 2x=2 and x=−2x = -2x=−2
x=4x = 4x=4 only
x=−13x = -\frac{1}{3}x=−31
x=0x = 0x=0