To solve the problem, we start by analyzing the given expression (assuming it's (\frac{x^2 - 4}{x - 2}), a common problem of this type):

Step 1: Factor the numerator

The numerator (x^2 - 4) is a difference of squares:
(x^2 - 4 = (x - 2)(x + 2))

Step 2: Simplify the expression

Substitute the factored form into the expression:
(\frac{(x - 2)(x + 2)}{x - 2})

We can cancel ((x - 2)) from the numerator and denominator only if (x - 2 \neq 0) (since division by zero is undefined).

Step 3: Identify the exception

(x - 2 = 0) implies (x = 2). Thus, the expression is equal to (x + 2) except when (x = 2).

Answer: (\boxed{2})

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