Find the minimum value of .

Answer and explanation

Correct answer: D. 5

  1. Step 1: Complete the square: .
  2. Step 2: A square is at least , so the minimum value is .
Answer
5.
Why not the others: 9: that is the constant term, not the minimum value. -5: the sign of the minimum is reversed. 3: it adds the shift to the minimum.

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