Algebra was not invented by any single person or civilization. It is a reasoning skill that is most likely as old as human beings. The concept of algebra began as a reasoning skill to determine unknown quantities.
Anyway, one of the first books about Algebra was written in Arabic by a ninth-century scientist named Muhammad ibn Muas al-Khwarizmi. The title of the book was shortened to al-jabr, now spelled algebra. The word algebra comes from part of the Arab title that means "equals can be added to both sides of an equation". Al-Khwarizmi used his al-jabr to help him in scientific work in geography and astornomy.
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Since "pre-" means before, then pre-algebra would be before algebra. Conversely, algebra would be after pre-algebra. Generally, the next class after a pre-algebra class would be Algebra I, followed by Algebra II.
Pre-algebra preps you for algebra.2nd answer:Pre-AP-algebra is the same as Algebra I. Both are way harder than pre- algebra.
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Elementary algebra