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What is the coefficient of x^0 in the expansion of (x + 1/x)^8? (2021)

Practice Questions

1 question
Q1
What is the coefficient of x^0 in the expansion of (x + 1/x)^8? (2021)
  1. 28
  2. 56
  3. 70
  4. 84

Questions & Step-by-step Solutions

1 item
Q
Q: What is the coefficient of x^0 in the expansion of (x + 1/x)^8? (2021)
Solution: The coefficient of x^0 occurs when k=4, which gives us 8C4 = 70.
Steps: 0

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