If `(1+x-2x^2)^6=1+a_1x+a_2x^(12)++a_(12)x^(12),` then find the value of `a_2+a_4+a_6++a_(12)dot`

If (1+x-2x^2)^6=1+a_1x+a_2x^(2)++a_(12)x^(12), then find the value of a_2+a_4+a_6++a_(12)dot

If (1+x-2x^2)^6=1+a_1x+a_2x^(2)+.........+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_1x+a_2x^2+……+a_(12)x^12 then

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 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 the value of a_(2)+a_(4)+a_(6)+….+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)=………