Find the range of f(x)=∣x−2∣+∣x+2∣f(x) = |x-2| + |x+2|f(x)=∣x−2∣+∣x+2∣.
[0,∞)[0, \infty)[0,∞)
[2,∞)[2, \infty)[2,∞)
[4,∞)[4, \infty)[4,∞)
(0,∞)(0, \infty)(0,∞)