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NDA2021MathematicsQuadratic EquationActual

If the roots of the quadratic equation x^2+2 x+k=0 are real, then

Options

  1. Ak 0
  2. Bk 0
  3. Ck 1
  4. Dk 1

Correct answer

D. k 1

Step-by-step solution

Roots are real, if D 0(-2)^2-4 k 0 (1-k) 0 k 1

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