Which of these is the domain of f(x)=1x2−9f(x) = \frac{1}{\sqrt{x^2-9}}f(x)=x2−91?
x>3x > 3x>3
x<−3x < -3x<−3 or x>3x > 3x>3
x≥3x \geq 3x≥3
x≠±3x \neq \pm 3x=±3