Hello,If you are having trouble with one of our topics, we always encourage you to check out Khan Academy videos to gain a basic understanding of the topic. https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-factor/x2ec2f6f830c9fb89:geo-series/v/geo-series-introHere are a few videos on geometric series.Geometric series are just a matter of practice-a quick google search turned up PurpleMath, another great resource-https://www.mathsisfun.com/algebra/sequences-sums-geometric.htmlOnce you've got the basics down, it's time to try some problems and understand the multiply and subtract method in full detail. We haven't quite gotten that far yet, but the chapter in AOPS Volume 1: The Basics and Beyond is quite helpful.
Hello, If you are having trouble with one of our topics, we always encourage you to check out Khan Academy videos to gain a basic understanding of the topic. https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-factor/x2ec2f6f830c9fb89:geo-series/v/geo-series-intro Here are a few videos on geometric series. Geometric series are just a matter of practice-a quick google search turned up PurpleMath, another great resource-https://www.mathsisfun.com/algebra/sequences-sums-geometric.html Once you've got the basics down, it's time to try some problems and understand the multiply and subtract method in full detail. We haven't quite gotten that far yet, but the chapter in AOPS Volume 1: The Basics and Beyond is quite helpful.