Evaluate .

Answer and explanation

Correct answer: A. 4

  1. Step 1: Factorise the numerator: . Step 2. Cancel and substitute: . Answer: 4. Why not the others: 0: Direct substitution gives , which is not the value of the limit. 2: That is the value of at the limit, not the limit of the expression. does not exist: The limit exists once the common factor is cancelled.

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