What is the domain of g(x)=xx2−9g(x) = \dfrac{x}{x^2-9}g(x)=x2−9x?
All real numbers except x=3x = 3x=3 and x=−3x = -3x=−3
All real numbers except x=9x = 9x=9
All real numbers except x=0x = 0x=0
All positive real numbers