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      Question

      What is the nature of the roots of the quadratic

      equation x² – 5x + 7 = 0 ? 
      A Not real Correct Answer Incorrect Answer
      B Real, rational, equal Correct Answer Incorrect Answer
      C Real, irrational, unequal Correct Answer Incorrect Answer
      D Real, rational, unequal Correct Answer Incorrect Answer

      Solution

      ATQ, To find the nature of the roots of the quadratic equation: Use the discriminant formula:

      Here, a = 1 b = −5 c = 7

      Since D<0, the roots are Not real

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