Al-Khwarizmi was an influential Persian mathematician, astronomer and geographer who lived between 780-850 CE. He worked in Baghdad during the time of the Abbasid Caliph al-Mamun and made significant advances in algebra and helped establish the decimal numeral system. In his influential book "Hisāb al-jabr wa-l-muqābala", he introduced the concepts of algebra, algorithms and much of the terminology still used today. He is considered the father of algebra and a pioneer in early Islamic mathematics.

1. Al Khwarizmi BY FERNANDO PASCUAL, JOSE A. RODRIGUEZ Y JULIO ORTIZ

2. His life Abu Abdallah Muḥammad ibn Mūsā al-Jwārizmī (Abu Yāffar)

3. ( أبو عبد الله محمد بن موسى الخوارزمي ابو جعفر ), knowed as al-Khwarizmi, was a mathemathician, astronoomist and geografic; that lived between 780 and 850.

4. The day of his birth is unknow, he was bornt in Jiva (Uzbekistán). He studied and worked in Bagdad, with the califa al-Mamun. For many people, he was the best mathemathic if the this age.

5. He wrote "Hisāb al-ŷabr wa'l muqābala",( حساب الجبر و المقابلة ) a book in that he made the bases os our words: álgebra, guarismo and algoritmo. He is considerated as the pather of the algebra and our numerical system.

6. His Life

7. His advances at algebra In his treatise on algebra, eminently didactic work, is to teach an algebra applied to solving everyday problems of the Islamic empire of the time A unit for him was a number, a square root was x and a square x 2 First reduces an equation to one of six standard forms: Squares equal to roots. Squares equal to numbers. Roots equal to numbers. Squares and roots equal to numbers, for example x 2 + 10x = 39 Squares and numbers equal to roots, for example x 2 + 21 = 10x Roots and numbers equal to squares, for example 3x + 4 = x 2