d, and that translation is largely responsible for what modern-day Algebra has become. (2)
             Another major groups of people to greatly contribute to early Algebra were the Ancient Babylonians. They are the first known people to have solved the quadratic equations much like we solve them today. Similar teaching methods to the present day ones were used during their time, and many of the new ideas are based off of ancient ideas and original problem solving methods. Diophantus of Alexandria first wrote down some of these methods in the 3rd century AD. Diophantus wrote a book called, "Arithmetica", which still gives many good solutions to difficult indeterminate equations.
             When these ancient civilizations began writing out their algebraic expressions, they used only occasional abbreviations. However, Islamic mathematicians, by medieval times, already began learning how to talk about high powers of the unknown "x", and started working out polynomials. This included the knowledge of how to multiply, divide, and find square roots. They also knew of the binomial theorem by this time, which was very important. Around the time that these Islamic mathematicians were discovering this material, a Persian man by the name of Omar Khayyam was busy becoming one of the most influential people in the history of Algebra. Khayyam discovered how to express roots of cubic equations by line segments obtained by intersecting conic sections, but he could not find a formula for the roots. (5)
             Not too long after that same time period, in the 13th century, an Italian mathematician, named Leonardo Fibonacci, came
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