[" If "(1+x-2x^(2))^(6)=1+a_(1)x+a_(2)x^(2)+.......+a_(12)x^(12)," then "],[a_(2)+a_(4)+a_(6)+.......+a_(12)=]

If (1+x-2 x^(2))^(6)=1+a_(1) x+a_(z) x^(2)+l .. .+a_(12) x^(12) then a_(2)+a_(4)+..+a_(12) =

If (1+x-2x^(2))^(6)=1+a_(1)x+a_(2)x^(12)+...+a_(12)x^(12) then find the value of a_(2)+a_(4)+a_(6)+...+a_(12)

If (1+x-2x^2)^(6) = 1 + a_(1) x + a_(2) x^(2) + ... + a_(12) x^(12) , then find a_2+ a_4 + ... + a_12

(1+x-2x^(2))^(6)=1+a_(1),x+a_(2)x^(2)+….+a_(12)^(12) then the value of a_(2) +a_(4)+a_(6)+….+a_(12)=………

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) =

If (1-2x+x^(4))^(5)=a_(o)+a_(1)+a_(2)x^(2)+......a_(20)x^(20) then a_(0)+a_(1)+a_(2)+......a_(20) is

If (2x^(2) - x - 1)^(5) = a_(0) + a_(1)x + a_(2)x^(2) + ....... + a_(10)x^(10) then, a_(2) + a_(4) + a_(6) + a_(8) + a_(10) =