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      Question

      Two times a number, added to the square of that number,

      gives 3. What could be the possible answer for this number?
      A โ€“ 1 or โ€“ 3 Correct Answer Incorrect Answer
      B โ€“ 1 or 3 Correct Answer Incorrect Answer
      C 1 or 3 Correct Answer Incorrect Answer
      D 1 or โ€“ 3 Correct Answer Incorrect Answer

      Solution

      Let the number be x. According to question, ⇒ 2x + x2 = 3 ⇒ x2 + 2x – 3 = 0 ⇒ x2 – x + 3x – 3 = 0 ⇒ (x – 1)(x + 3) = 0 ⇒ x = 1, -3

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