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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

For x R , the expression x^2+2x+c x^2+4x+3c can take all real values if c :

Options

  1. A(1, 2)
  2. B(0, 1)
  3. C(-1, 0) .

Correct answer

C. (-1, 0) .

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