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by captain_perl 2871 days ago
Well, Euler and Gauss knew all there was to know about mathematics at the time. That consisted of algebra up to quintic equations plus their own inventions.

You'd be unpleasantly surprised if you saw a turn-of-the century-math high school textbook (1900 or so.) Pretty advanced stuff towards the end.

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That consisted of algebra up to quintic equations plus their own inventions

Well, calculus had been invented before Euler was born, and a lot of advanced math had been developed by the time Gauss appeared (a lot of it by none other than Euler).