Mathematics in Ancient and Medieval India c7.14

c7.14

*yāva* 0 *yā* 10 *rū* 8.
*yāva* 1 *yā* 0 *rū* 1. Here *yā* = *yāvattāvat* = unknown = x (say), *yāva* = square of the unknown quantity, *rū* = absolute number. The above can be written as 0.x² + 10.x - 8 = 1. x² + 0.x + 1, or, 10x - 8 = x² + 1.