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2015-10-27T15:52:08+05:30
Ancient Babylonians understood second-degree equations as geometric problems of sides and areas of rectangles and squares.Brahmagupta of India was instrumental in understanding that numbers are abstract concepts which can be zero or negative. He pointed out that quadratic equations can have two possible solutions, one of which can be negative. He derived algebraic solutions to quadratic equations and went several steps further by solving systems of equations and quadratic equations with two unknowns.

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