Brahmagupta's identity
In algebra, Brahmagupta's identity says that, for given n, the product of two numbers of the form a2 + nb2 is itself a number of that form. In other words, the set of such numbers is closed under multiplication.
In algebra, Brahmagupta's identity says that, for given n, the product of two numbers of the form a2 + nb2 is itself a number of that form. In other words, the set of such numbers is closed under multiplication.
In algebra, Brahmagupta's identity says that, for given n, the product of two numbers of the form a2 + nb2 is itself a number of that form. In other words, the set of such numbers is closed under multiplication.
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