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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If exactly two integers lie between the roots of equation x^2 + ax - 1 = 0 . Then integral value(s) of ' a ' is/are :

Options

  1. A-1
  2. B-2
  3. C1
  4. D2 .

Correct answer

A. -1

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