Concept:f(2) is not defined because the denominator becomes zero at x=2.Explanation:The function f(x)=x−2x2−4 is defined only for x=2.At x=2, the denominator x−2=0, so f(2) is undefined.Although the expression simplifies to x+2 for x=2, the original function is not defined at x=2.Answer:f(2) is not defined.