Marco

media type="custom" key="3832791"

Phase One
Babylonians The first king of the Babylonian Dynasty was Naplanum who started ruling in 1961 BC and the last ruler was Philip II Philorommaeus who ended his reign in 63 BC. They didn't use the quadratic formula instead they used a method called "completing the square". The quadratic formula is just a formalization of that method. Their method was much better than the Egyptian method because they had a numeral system based on 60. They used 60 because it had many divisors such as 2,3,4,5,6,10 and 12. []

Brahmagupta  Brahmagupta was an Indian mathematician and astronomer. He lived from 598-668. Jisnugupta, Brahmagupta's father wrote important books on mathematics and astronomy. He gave two solutions to a quadratic equation. One was x = the square root of 4*A*C plus B^2 minus B/2 times A. The other solution was x = the square root of A*C plus B^2 divided by 4 minus B/2 all over A. []

Phase Two
media type="custom" key="3883169"