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If one root of the equation x² - 7x + p = 0 is 3, what is the value of p? (2020)

Practice Questions

1 question
Q1
If one root of the equation x² - 7x + p = 0 is 3, what is the value of p? (2020)
  1. 6
  2. 9
  3. 12
  4. 15

Questions & Step-by-step Solutions

1 item
Q
Q: If one root of the equation x² - 7x + p = 0 is 3, what is the value of p? (2020)
Solution: Using the root, substitute x = 3: 3² - 7*3 + p = 0, which gives p = 6.
Steps: 0

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