The ancient Egyptians began to record the patterns of lunar phases and the seasons, both of the agriculture and the religious reasons. Moscow papyrus, which dates the Egyptians middle kingdom. Rhind papyrus is a kind of instruction manual in geometry, and it gives us explicit demonstrations of how multiplication and division was carried out at that time. It also contains evidence of other mathematical knowledge, including unit fractions, composite and prime numbers, arithmetic, geometric and harmonic means, and how to solve first order linear equations as well as arithmetic and geometric series. The Berlin Papyrus, shows that ancient Egyptians could solve second-order algebraic (quadratic) equations. They also used multiplication and division.
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