I thought we can always cancel terms out and that its absolutely acceptable(adsbygoogle = window.adsbygoogle || []).push({});

but then it turned out that I can`t cancel out the term "x-2" from "(x^2 - 4)/(x-2)"

is this exception only for functions?

and I have a 2nd question, and I know I should read on logic first, but PLEASE!!! I want to know this:>

If someone proved that canceling terms out is ok, then how come we face some situations where we just can`t cancel the terms out without implying that we did so?

My 3rd question, why does canceling terms out is ok without implication when we deal with limits while its not when we deal with functions?

Thank You

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# Canceling terms out, ok or not?

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