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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If , ( < ) are the real roots of the equation x^2 - (k + 4)x + k^2 - 12 = 0 such that 4 ( , ) ; then the number of integral values of k equals to :

Options

  1. A4
  2. B5
  3. C6
  4. D7.

Correct answer

D. 7.

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