Brahmagupta's problem

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This problem was given in India by the mathematician Brahmagupta in 628 in his treatise Brahma Sputa Siddhanta:

solve the Pell equation

x^2 - 92y^2 = 1.

Brahmagupta gave the smallest solution as

(x,y) = (1151,120).

See also[edit]

External links[edit]

Weisstein, Eric W., "Brahmagupta's Problem", MathWorld.