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The coefficient of x^(n) in the expansio...

The coefficient of `x^(n)` in the expansion of `(1+x) (1-x)^(n)` is

A

`(n-1)`

B

`(-1)^(n) (1-n)`

C

`(-1)^(n-1) (n-1)^(2)`

D

`(-1)^(n-1)n`

Text Solution

Verified by Experts

The correct Answer is:
B
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