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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

The exhaustive set of values of a for which inequation (a - 1)x^2 - (a + 1)x + a - 1 0 is true x 2 :

Options

  1. A(- , 1)
  2. B[ 7 3 , )
  3. C[ 3 7 , )
  4. DNone of these.

Correct answer

B. [ 7 3 , )

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