Answer and explanation

Correct answer: A. 2

Step 2. Set up evaluation between limits and : .
  1. Step 1: Apply the fundamental theorem of calculus with the power rule of integration: .
  2. Step 3: Evaluate: .
Answer
2.
Why not the others: Other numerical options result from omitting antiderivative power division, using incorrect integration bounds, or arithmetic mistakes during upper-bound evaluation.

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