... of roots and the solution of proportions, and eight measurements (determinations). In this fine classification of mathematical procedures, he also listed four methods for multiplication, and five rules for reducing a rational expression to a single fraction (website three). His mathematics was a mixture of concrete problems and abstract formulas (determination of the partial sums of the series of perfect squares and of ... , written in 830 BC, was Hisab al-jabr w'al-muqabala. From the al-jabr in the title we get algebra. The treatise develops a system for the solutions of quadratic expre...

• Word Count: 1938
• Approx Pages: 8