A function is defined as f(x)=∣x2−9∣−∣x+3∣f(x) = |x^2 - 9| - |x + 3|f(x)=∣x2−9∣−∣x+3∣. Determine all intervals of xxx such that f(x)<0f(x) < 0f(x)<0.
(−3,2)(-3, 2)(−3,2)
(−4,2)(-4, 2)(−4,2)
(−2,3)(-2, 3)(−2,3)
(−4,3)(-4, 3)(−4,3)