If the quadratic equation x^2 + kx + 16 = 0 has equal roots, what is the value of k?

Practice Questions

1 question
Q1
If the quadratic equation x^2 + kx + 16 = 0 has equal roots, what is the value of k?
  1. -8
  2. -4
  3. 4
  4. 8

Questions & Step-by-step Solutions

1 item
Q
Q: If the quadratic equation x^2 + kx + 16 = 0 has equal roots, what is the value of k?
Solution: For equal roots, the discriminant must be zero: k^2 - 4*1*16 = 0, thus k = -8.
Steps: 0

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