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  • Quadratic Equations
  • If the equation x2 - 9x + m = 0 has only imaginary roots,...
Multiple choice

If the equation x2 - 9x + m = 0 has only imaginary roots, find the value of m.

  1. m = 20

  2. m = 20 or 25

  3. m < 20 or 25

  4. m > 20.25

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

.b2 - 4ac < 0 81 - 4m < 0 m > 20.25

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