How many real roots does have?

Answer and explanation

Correct answer: B. None

  1. Step 1: .
  2. Step 2: A negative discriminant means no real roots.
Answer
None.
Why not the others: Two equal roots: this needs the discriminant to be exactly zero. Two different roots: this needs the discriminant to be positive. Exactly one root and one imaginary root: complex roots come in pairs.

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