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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

The possible positive integral value of ' k ' for which 5x^2 - 2kx + 1 < 0 has exactly one integral solution may be divisible by :

Options

  1. A2
  2. B3
  3. C5
  4. D7 .

Correct answer

A. 2

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