How to find domain of function f(x)=(x-2)/(x^2-4)? How to find domain of function f(x)=(x-2)/(x^2-4)?

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The domain of a function f(x) is all the values x for which f(x) gives real values.

f(x)=(x-2)/(x^2-4)

=> (x - 2)/(x - 2)(x + 2)

=> 1/(x + 2)

This is not defined when x = -2

The domain is R - {-2}

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