Mathematicians like Brahmagupta (in 628 AD) and Bhāskara I (in 629 AD) made contributions in this area as did other mathematicians who followed.
Iməssidan sund Brahmaguɗta (ɣor 628 AD) ad Bhāskara I (ɣor 629 AD) iwayanid tilalen dǎɣ adag wen, kul sund iməssidan iyad wi alkamnen.