" Find the number of different terms in the sum "(1+x)^(2009)+(1+x^(2))^(2008)+(1+x^(3))^(2007)

Find number of different dissimilar terms in the sum (1+x)^(2012)+(1+x^(2))^(2011)+(1+x^(3))^(2010)

x^(2009) xx(1)/(x^(2008))=x

Find the sum to n terms of the sequence (x+1/x)^(2),(x^(2)+1/x)^(2),(x^(3)+1/x)^(2),...

Find the sum to n terms of the series: (x+1/x)^(2)+(x^(2)+1/(x^(2)))^(2)+(x^(3)+1/(x^(3)))^(2) + ……

Find the sum of n terms of the sequence (x+(1)/(x))^(2),(x^(2)+(1)/(x^(2)))^(2),(x^(3)+(1)/(x^(3)))^(2),...

Find the sum of n terms of the sequence (x+1/x)^2,(x^2+1/(x^2))^2,(x^3+1/(x^3))^2,

Coefficient of x^(2012) in (1-x)^(2008)(1+x+x^2)^2007

Find the sum to n terms of the following series: (x+(1)/(x))^(2)+(x^(2)+(1)/(x^(2)))^(2)+(x^(3)+(1)/(x^(3)))^(2)+(x^(4)+(1)/(x^(4)))^(2)+