number theory
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Started by: madnessweasleymadnessweasley
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number theory
madnessweasleymadnessweasley 1208362681|%e %b %Y, %H:%M %Z|agohover

A 1. Show that if x, y, z are positive integers, then (xy + 1)(yz + 1)(zx + 1) is a perfect
square if and only if xy + 1, yz + 1, zx + 1 are all perfect squares.

Source: Shall be revealed later if i want to :D

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