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The roots of the quadratic equation x^2 - 4x + k = 0 are 2 and 2. What is the value of k? (2022)

Practice Questions

1 question
Q1
The roots of the quadratic equation x^2 - 4x + k = 0 are 2 and 2. What is the value of k? (2022)
  1. 0
  2. 2
  3. 4
  4. 8

Questions & Step-by-step Solutions

1 item
Q
Q: The roots of the quadratic equation x^2 - 4x + k = 0 are 2 and 2. What is the value of k? (2022)
Solution: If the roots are both 2, then k = 2^2 - 4*2 = 4 - 8 = -4. Thus, k = 4.
Steps: 0

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