What is the value of k if the quadratic equation x^2 + kx + 16 = 0 has roots that are real and distinct? (2019)

Practice Questions

1 question
Q1
What is the value of k if the quadratic equation x^2 + kx + 16 = 0 has roots that are real and distinct? (2019)
  1. -8
  2. -4
  3. 4
  4. 8

Questions & Step-by-step Solutions

1 item
Q
Q: What is the value of k if the quadratic equation x^2 + kx + 16 = 0 has roots that are real and distinct? (2019)
Solution: For real and distinct roots, the discriminant must be positive: k^2 - 4(1)(16) > 0. Thus, k^2 > 64, leading to k < -8 or k > 8.
Steps: 0

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