In the 9th and 10th centuries, a Muslim mathematician, Al-Khwarizmi, built upon and expanded some of the works of Greek scholars such as Diophantus. Together the two men are often said to be the fathers of modern algebra.
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Algebra was invented by Muslims in ancient times.
There were no Muslims around 4000 years ago when the Babylonians began using what we now call algebra.
Algebra is the usage of variables (e.g. x,y) in order to make the solution of an equation have many possible answers.
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.