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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If the roots of the equation x^2 - ax - b = 0 ( a, b R ) are both lying between -2 and 2 , then :

Options

  1. A|a| < 2 - b 2
  2. B|a| > 2 - b 2
  3. C|a| < 4
  4. D|a| > b 2 - 2 .

Correct answer

A. |a| < 2 - b 2

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