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What is the value of k if the roots of the equation x^2 + kx + 9 = 0 are imaginary?

Practice Questions

1 question
Q1
What is the value of k if the roots of the equation x^2 + kx + 9 = 0 are imaginary?
  1. k < 0
  2. k > 0
  3. k = 0
  4. k ≤ 0

Questions & Step-by-step Solutions

1 item
Q
Q: What is the value of k if the roots of the equation x^2 + kx + 9 = 0 are imaginary?
Solution: The discriminant must be less than zero: k^2 - 4*1*9 < 0 leads to k^2 < 36, hence k < 0 or k > 0.
Steps: 0

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