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    • Question

      If (x 2 = 2x – 1), then find the value of [x³

      + (x⁴/1)][1 - x³]
      A 2 Correct Answer Incorrect Answer
      C 4 Correct Answer Incorrect Answer
      D -2 Correct Answer Incorrect Answer

      Solution

      x² = 2x - 1
      ⇒ x² - 2x + 1 = 0
      ⇒ (x - 1)² = 0
      ⇒ x = 1
      Required value = [1³ + (1⁴/1)] × [1 - 1³]
      = (1 + 1) × (0)
      = 2 × 0 = 0

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