Question
Find the given limit. \( \lim _{x \rightarrow-2} \frac{x^{2}-6}{2-x} \) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. \( \lim _{x \rightarrow-2} \frac{x^{2}-6}{2-x}=\square \) (Simplify your answer.) B. The limit does not exist.
Ask by Matthews Parsons. in the United States
Jan 22,2025
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Tutor-Verified Answer
Answer
The limit is \(-\frac{1}{2}\).
Solution
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Mind Expander
To evaluate the limit \( \lim _{x \rightarrow-2} \frac{x^{2}-6}{2-x} \), we first substitute \( x = -2 \): \[ = \frac{(-2)^{2}-6}{2-(-2)} = \frac{4-6}{2+2} = \frac{-2}{4} = -\frac{1}{2}. \] Since we find a definite value, the limit exists. Thus, the correct choice is: A. \( \lim _{x \rightarrow-2} \frac{x^{2}-6}{2-x}=-\frac{1}{2} \).