Question 831618
state the domain for the rational function 
f(x)= x^2-4 all over x-2 
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f(x) = [(x-2)(x+2)/(x-2)]
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Comment: f has a hole at x = 2 and a vertical asymptote at x = -2.
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Domain: All Real Numbers except x = -2 and x = +2
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Cheers,
Stan H.
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