chaotic_iak wrote: Determine all pairs of distinct real numbers $(x, y)$ such that both of the following are true: $x^{100} - y^{100} = 2^{99} (x-y)$ $x^{200} - y^{200} = 2^{199} (x-y)$ Already posted yesterday

pco wrote: Already posted yesterday Whoops, that's true; didn't check it. Here is the previous post for discussions about it. I'm just putting this post up for the contest page.