QUIZ H5P - Where do math symbols come from? Watch the film and answer the questions

Watch this short introduction to the origins of math symbols and answer the questions:

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Źródło: TED-Ed, Where do math symbols come from? John David Walters, 30.10.2017 [DOSTĘP 13.04.2020]. Dostępne w YouTube: https://www.youtube.com/watch?v=eVm063xmnow