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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

Let A denotes the set of values of x for which x+2 x-4 0 and B denotes the set of values of x for which x^2 - ax - 4 0 . If B is the subset of A, then a CAN NOT take the integral value :

Options

  1. A0
  2. B1
  3. C2
  4. D3.

Correct answer

D. 3.

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