History of Hindu Mathematics: A Source Book v2.c17.s17.t5.11

v2.c17.s17.t5.11

Whence $z - w = λ,$ $z + w = (y²)/(λ)(c - (b²)/(4p²)),$ where λ is an arbitrary rational number. So $w = ½(y²)/(λ)(c - (b²)/(4p²)) - λ,$ as stated in the rule. Therefore, $x = 1/2p(y²)/(λ)(c - (b²)/(4p²)) - λ - by/(2p²),$