What is the product of the real solutions of ?

Answer and explanation

Correct answer: D.

  1. Step 1: Write and let : .
  2. Step 2: So or , giving or .
  3. Step 3: The product of the solutions is .
Answer
.
Why not the others: and are the sum and product of the roots in , not in ; is the sum of the solutions in ; is one solution alone.

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