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If (1 + x - 3x^(2))^(10) = a(0) + a(1)x ...

If `(1 + x - 3x^(2))^(10) = a_(0) + a_(1)x + a_(2)x^(2) + ....... + a_(20)x^(20)`, then `a_(2) + a_(4) + a_(6) + ……. + a_(20) =`

A

`(3^(10) + 1)/2`

B

`(3^(9) + 1)/2`

C

`(3^(10) - 1)/2`

D

`(3^(9) - 1)/2`

Text Solution

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The correct Answer is:
C
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