for g(x) = (x-2) / (x^2 -9)(adsbygoogle = window.adsbygoogle || []).push({});

the domain of the function would be simply to have the denominator not equal to 0, which in this case would be x = 3.

but.. the solution states that it is-3and 3 cannot be used.

this is confusing seeing that -3^2 -9 = -18 which is not 0.

maybe it means |-3|?

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# Domain of a function

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