Algebra of Bhaskara II

His son was born, the illustrious Chatrasiṃha, a master of arts and most pure. His son was Śrī Rudrasiṃha, possessing the valor of a lion, who brought joy to the best of kings. (7)
He possessed a constant stream of generosity and shone with full brilliance like the moon. He had four sons, all highly knowledgeable, beginning with Śrī Rāmacandra. (8)
His elder brother was the illustrious Maheśa, a king of men and a fountain of compassion. He was always intent on pleasing his subjects and was a scholar who understood the sorrows of others. (9)
Like Kuśa and Lava, his two sons now dwell on this earth, resembling Hari and Nara. They are loved by all kings and are endowed with every art and skill. (10)
The jewel of kings, Śrī Lakṣmīśvarasiṃha, shines on this earth. He is the eldest, the sun in the clear sky of Mithilā. His younger brother, whose fame is like white rays born from the ocean of generosity, is the virtuous Śrī Vijjara-meśvara, a treasure of knowledge and beloved by Hari. (11)
May this work be for the welfare of all, composed by that illustrious Bhāskara of great and widespread fame, a knower of the Vedas and Vedāṅgas, who shone like the sun by illuminating proficiency in Mīmāṃsā, Nyāya, and mathematics, who was self-controlled, extremely handsome, honored by a host of noble and learned kings, a generous donor, and a participant in the arts of the Mārtaṇḍa-brahmayajña. (12)
Here, the learned who know the essence of mathematics understand this algebra, which is known as the "seed" bīja algebra/seed, for it acts as the foundation even for the clever without needing a methodology of proofs. (13)
There was a learned man named Śrī Karuṇākara, a master of the Vedāṅga sciences. His son was Śrī Śambhunātha, honored by kings, a virtuous man who respected the learned, knew mathematics, and was a master of the Siddhāntas. By the power of his meditation on Śambhu Shiva, he reached the state of Śambhu in Kāśī with devotion. (14)
He had two sons; the first was Jīvanātha, and the younger was Nīlāmbara, both masters who attained knowledge through asceticism. (15)
Nīlāmbara was a leader among astrologers, a repository of the wealth of knowledge in the Siddhāntas. He was highly honored by the rulers of Mithilā and renowned among the learned. (16)
This algebra commentary, Subodhinī, is composed by Jīvanātha for the amusement of the King of Mithilā and for the benefit of the people. (17)
In these beautiful examples and formulae, which provide proofs for the instruction of children, let modern scholars witness my skill. (18)

Now, the illustrious Bhāskarācārya, son of Śrī Maheśvarācārya, the master of the fourteen branches of knowledge, and the sun that makes the lotus of mathematics bloom, wishing to compose his Siddhānta-śiromaṇi Crest-jewel of Doctrines, begins with an invocation to remove obstacles and to instruct his pupils, having already stated the vyakta-gaṇita arithmetic of known quantities as a prerequisite for the subject.