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The coefficient of the middle term of th...

The coefficient of the middle term of the expansion of `(1-2x+x^2)^n` is

A

`(2n!)/(n^2!)`

B

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

C

`((2n+1)!)/((n+1)!(n-1)!)(-1)^(n+1)`

D

`((2n+1)!)/((n+1)^2!)`

Text Solution

Verified by Experts

The correct Answer is:
B
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PATHFINDER-BINOMIAL THEOREM AND PRINCIPLE OF MATHEMATICAL INDUCTION-QUESTION BANK
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