Determine the set of all real xxx that satisfy x2−9x2+4>0\frac{x^2 - 9}{x^2 + 4} > 0x2+4x2−9>0.
x<−3x < -3x<−3 or x>3x > 3x>3
−3<x<3-3 < x < 3−3<x<3
x>0x > 0x>0
x≠3x \neq 3x=3