Mathematics in Ancient and Medieval India c7.s1.4

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c7.s1.4

The method of transforming the left hand side of the quadratic equation ax² + bx = c into a whole square by multiplying both sides by 4a, adding b² and taking the square root, is given by Śrīdhara (c. 991 A.D.) in his algebra which is lost but preserved in the quotations of Bhāskara II (c. 1150 A. D. ), Jñānarāja and Sūryadāsa. Datta and Singh discussed in detail all these Indian methods of solving the quadratic equation in their work, *History of Hindu Mathematics*.¹

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