Find the range of xxx for which the inequality x2−16<3\sqrt{x^2 - 16} < 3x2−16<3 is defined and true.
4≤∣x∣<54 \leq |x| < 54≤∣x∣<5
∣x∣>4|x| > 4∣x∣>4
x<5x < 5x<5
x>4x > 4x>4