Chyrese's+page

Phase 1: Babylonians their first dynasty of Babylon was 1894B.C. to 1595A.D. one of there famous kings was Hammurabi. He created something called the code of Hammurabi which was like laws for Babylon. This is one of formulas that they used //ab// = [(//a// + //b//)2 - //a//2 - //b//2]/2. The Babylonians attributed to the first recorded zero in the 3rd century B.C. ,they also were the first culture to invent the 1st place value system in the year 300 B.C. The Babylonians had a number system that is advanced even for people today. The base was 60 system (sexigesimal) instead of base 10 (decimal) which is what we all use today. The Babylonians were the people that divided a day in 24 hours also that each hour was 60 minutes and each minute was 60 seconds. That form of time that they used has been around for more than 4000 years. They also came up with the idea of giving squares of the number up to 59 and cubes of the numbers up to 32. The Babylonians did not have the knowledge of multiplication they came up with this formual ((a+b)²-a²-b²).

Brahmagupta he lived from 598 to 665 he was an Indian mathematician. Brahmagupta wrote a book with very important things about mathematics in 628 his book was made into 25 chapters which tells us that he wrote it in Bhillamala. Brahmagupta gave a solution to the linear equation in chapter 18 of his book which was called Brahmasphutasiddhanta .Brahmagupta came up with the theory of cyclic quadrilateral which is "having perpendicular diagonals, the perpendicular to a side from the point of intersection of the diagonals always bisects the opposite side".

In Bramagupta's book he said that zero is a result of a number subtracting from itself. He made properties like "A debt minus a debt is a debt "and this one " When zero is added to a number or subtracted from a number, the number remains unchanged; and a number multiplied by zero becomes zero". There three types of equations that he solved quadratic ,Linear indeterminate equations and Second order indeterminate (assigned to Pell by Gauss) all by general methods.

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http://www.math.wichita.edu/history/topics/num-sys.html#babylonian

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__[]__  http://www.gap-system.org/~history/Biographies/Brahmagupta.html

Phase 2 PART1

Phase 3 PART 1 Solve by graphing:A quadratic equation is an equation that can be written in the form ax^2+bx+c=0



PART 2 Solve by factoring: Using the zero property to solve equations of the form Ax^2+Bx+C=0 if the quadratic expression can be factored

PART 3 solve by using quadratic formula: it solves for X

Phase 4

Phase 5