#### Sample Question

Which of the following rational algebraic expressions is undefined at [%x=2%]?

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Which of the following rational algebraic expressions is undefined at [%x=2%]?

- [% \frac{x-2}{x+2} %]
- [% \frac{x-2}{x^2-4} %]
- [% \frac{x+2}{x^2-x-6} %]
- [% \frac{x-2}{x^2+4} %]

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