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If the roots of the equation x² + 5x + k = 0 are 1 and 4, find k. (2020)

Practice Questions

1 question
Q1
If the roots of the equation x² + 5x + k = 0 are 1 and 4, find k. (2020)
  1. 4
  2. 5
  3. 6
  4. 7

Questions & Step-by-step Solutions

1 item
Q
Q: If the roots of the equation x² + 5x + k = 0 are 1 and 4, find k. (2020)
Solution: Using the sum and product of roots: k = 1*4 = 4, and sum = 1 + 4 = 5, thus k = 7.
Steps: 0

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