I kōrerorerotia mārama aketia te tohutoro o Diophantus e te kaiako Indian o Brahmagupta, i Brāhmasphuṭasiddhānta i te tau 628, nāna i whakamahi i ngā tau tōraro hei whakaputa i te tātai puka whāwhā ahuwhānui e whakamahia ana i tēnei rā.