Sum-of-series-1-2x-7x-2-20x-3-up-to-n-terms-when-x-1-is- Tinku Tara June 4, 2023 Algebra 0 Comments FacebookTweetPin Question Number 25425 by Tinkutara last updated on 10/Dec/17 Sumofseries1+2x+7x2+20x3+…uptontermswhenx=−1is Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: let-f-z-3-zsin-z-2-calculate-Res-f-0-Next Next post: solve-1-x-2-y-xy-1-x-2- Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Save my name, email, and website in this browser for the next time I comment.