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Find the coefficient of x^10 in (1+ 2x)/...

Find the coefficient of `x^10` in `(1+ 2x)/((1 - 2x)^2)`

A

`r.2^r`

B

`(2r - 1)2^r`

C

`r.2^(2r + 1)`

D

`(2r + 1) 2^r`

Text Solution

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The correct Answer is:
D
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