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#2
02 Á¡ÃÒ¤Á 2016, 03:02
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(t+n)(t-n)=2009
2009=7*7*41 check t+n=49, t-n=41 t+n=-41, t-n=-49 t+n=289, t+n=7 t+n=-7,t-n=-287 t+n=2009,t-n=1 t+n=-1,t-n=-2009 from all the cases n=4,140,1004
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Mathematics, rightly viewed possesses not only truth, but supreme beauty. B.R. 02 Á¡ÃÒ¤Á 2016 21:51 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ XIIIX à˵ؼÅ: forgot 1 case 
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#5
02 Á¡ÃÒ¤Á 2016, 21:49
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ÍéÒ§ÍÔ§:
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Mathematics, rightly viewed possesses not only truth, but supreme beauty. B.R. 02 Á¡ÃÒ¤Á 2016 21:52 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ XIIIX
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