Question 13
Binomial TheoremDetermine the coefficient of x3 in the binomial expansion of (1 + ½x)5
- A.5/8
- B.5/6
- C.5/4
- D.5/2
Show the answer and explanation
Answer: C (5/4)
Explanation
⁵C₃(½x)³ = 10 × x³/8, so the coefficient is 10/8 = 5/4.
Determine the coefficient of x3 in the binomial expansion of (1 + ½x)5
Answer: C (5/4)
⁵C₃(½x)³ = 10 × x³/8, so the coefficient is 10/8 = 5/4.