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Manipal MET2017MathematicsQuadratic Equation

If the roots x^2+a x+9=0 are complex, then

Options

  1. Aa 6
  2. Ba -6
  3. C|a| 6
  4. D|a| 6

Correct answer

C. |a| 6

Step-by-step solution

Since, roots are complex. array lcc & a^2-36 0 & ( discriminant 0 ) & a^2 36 & |a| 6 array

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