SOLUTION: If the horizontal asymptote for f(x) = (x-4)/((x^2)-4) is y=0, why is it that when I plug in x=4 I get y=0 as an answer? I don't understand... What did I do wrong?

Question 965974: If the horizontal asymptote for f(x) = (x-4)/((x^2)-4) is y=0, why is it that when I plug in x=4 I get y=0 as an answer? I don't understand... What did I do wrong?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
I had something here which was wrong.

...
Letting x=4,

x=4 is a ZERO or ROOT of f(x).
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