0 votes 0 votes Find the value of each of these sums. $\displaystyle{}\sum_{j=0}^{8}(1+(-1)^{j})$ $\displaystyle{}\sum_{j=0}^{8}(3^{j}-2^{j})$ $\displaystyle{}\sum_{j=0}^{8}(2\cdot 3^{j} + 3\cdot 2^{j})$ $\displaystyle{}\sum_{j=0}^{8}(2^{j+1}-2^{j})$ Set Theory & Algebra kenneth-rosen discrete-mathematics set-theory&algebra descriptive + – admin asked Apr 21, 2020 admin 227 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.