In the binomial expansion of , find the term independent of .
Answer and explanation
Correct answer: D.
- Step 1: Write the general term in the binomial expansion of : .
- Step 2: For the term independent of , set the exponent of to zero: . Compute the numerical coefficient: .
Answer
.
Why not the others: The positive value forgets the factor ; the value omits the coefficient from the first term; combines both omission of and a sign error.
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