Papyrus of Ahmose or Mathematical Rhind (1500 BC / 1550 BC) is the oldest manuscript written in Algebra and Trigonometry.
Manuscript shows that Egyptians used first-order equations and solved them in several ways.
They know quadratic equations and solve them. They also know numerical and geometric sequences and know quadratic equations like two :
X2 + y2 = 100,
Y = 3/4 x, where x = 8, y = 6,
This equation is the origin of Pythagoras theorem, a2 = b 2 + c 2, and Egyptians used to call unknown number (koom).
Pythagoras developed his mathematical theories after travelling to Egypt and learning from Egyptian priests.
This has been proven in books of Greek historians and scholars such as Farpharius of Sour, Herodotus, and Thales.
Egyptians had Algebra, Trigonometry, and Geometry about 2000 years before the birth of Pythagoras and about 3000 years prior to al-Khwarizmi being born.
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The Rhind Mathematical Papyrus (RMP; also designated as papyrus British Museum 10057 and pBM 10058) is one of the best known examples of ancient Egyptian mathematics.
It is named after Alexander Henry Rhind, a Scottish antiquarian, who purchased the papyrus in 1858 in Luxor, Egypt.
It was apparently found during illegal excavations in or near the Ramesseum. It dates to around 1550 BC.















