For what value(s) of xxx is 2x−6x2−9\dfrac{2x - 6}{x^2 - 9}x2−92x−6 undefined?
x=3x = 3x=3 and x=−3x = -3x=−3
x=3x = 3x=3 only
x=9x = 9x=9
x=23x = \frac{2}{3}x=32