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What is the value of k if the quadratic equation x^2 + kx + 9 = 0 has roots that are both positive? (2023)

Practice Questions

1 question
Q1
What is the value of k if the quadratic equation x^2 + kx + 9 = 0 has roots that are both positive? (2023)
  1. -6
  2. -4
  3. -2
  4. 0

Questions & Step-by-step Solutions

1 item
Q
Q: What is the value of k if the quadratic equation x^2 + kx + 9 = 0 has roots that are both positive? (2023)
Solution: For both roots to be positive, k must be negative and k^2 > 36. Thus, k < -6.
Steps: 0

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