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      Question

      I. 63x² + 146x + 80 = 0 II. 42y² + 109y

      + 70 = 0
      A If x Correct Answer Incorrect Answer
      B If x>y, Correct Answer Incorrect Answer
      C If x≥y, Correct Answer Incorrect Answer
      D If x=y or no relationship cannot be established between x and y Correct Answer Incorrect Answer
      E If x≤y Correct Answer Incorrect Answer

      Solution

      I. 63x² + 146x + 80 = 0 63x² + 90x + 56x + 80 = 0 9x(7x + 10) + 8(7x + 10) = 0 (9x + 8) (7x + 10) = 0 ∴ x = (-8)/9, (-10)/7 II. 42y² + 109y + 70 = 0 42y² + 60y + 49y + 70 = 0 6y(7y + 10) + 7(7y + 10) = 0 (6y + 7) (7y + 10) = 0 ∴ y = (-7)/6, (-10)/7 Hence, relationship cannot be established between x and y

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