Hi, I'm stuck on a problem because I don't know how to calculate this series:(adsbygoogle = window.adsbygoogle || []).push({});

Ʃ(2^n * x^n), n starts from 0 to infinity. How can I calculate this? Do I have to transform it into something else where I know the outcome of the Σ like we do with the geometric functions?

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# How to calculate infinite series?

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