Find the limit: .
Answer and explanation
Correct answer: C. 4
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For , simplify the rational expression :
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For , simplify the rational expression :
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- Step 1: Factor the numerator using the difference of squares :
- Step 2: Evaluate the limit by direct substitution :
Answer
4.
Why not the others: The values 2, 0, and 'Does not exist' overlook algebraic cancellation of the removable discontinuity at .
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