(1) `(a+b)+(a^2+2b)+(a^3+3b)+....` upto `n` terms= (2) `(x+1/x)^2+(x^2+1/x^2)^2+(x^3+1/x^3)^2+....(x^n+1/x^n)^2=`

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 of 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+...

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 sequence (x+1//x)^2,(x^2+1//x)^2,(x^3+1//x)^2, ,

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

Sum the following upto n terms : 1+(1+x)+(1+x+x^2)+(1+x+x^2+x^3)+ .....

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 of the GP : (i) sqrt(7)+sqrt(21)+3sqrt(7)+... to n terms (ii) 1-1/3+1/3^(2)-1/3^(3)+... to n terms (iii) 1-a+a^(2)-a^(3)+... to n terms (a ne 1) (iv) x^(3)+x^(5)+x^(7)+... to terms (v) x(x+y)+x^(2)(x^(2)+y^(2))+x^(3) (x^(3)+y^(3))+... to n terms

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