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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

Let , be real roots of the quadratic equation x^2 + kx + (k^2 + 2k - 4) = 0 , then the maximum value of ( ^2 + ^2) is equal to :

Options

  1. A9
  2. B10
  3. C11
  4. D12.

Correct answer

D. 12.

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