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The real function f(x) = x/(x² - 4) is undefined at
Ax = 2 and x = -2
Bx = 4 and x = -4
Cx = 0 only
Dx = 4 only
Answer & Solution
Correct answer: A. x = 2 and x = -2
The denominator x² - 4 is zero when x = 2 or x = -2.
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