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à¤Ã×èͧÁ×ͧ͢ËÑÇ¢éÍ | ¤é¹ËÒã¹ËÑÇ¢é͹Õé |
#1
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ú¡Ç¹ ªèÇÂá¡é⨷Âì ÊÍǹ Á µé¹ ¢é͹Õé·Õ¤ÃѺ
¨§ËҨӹǹàµçÁºÇ¡ n ·Ñé§ËÁ´ ·Õè·ÓãËé (n^2) + 2009 à»ç¹¡ÓÅѧÊͧÊÁºÙóì
¢Íº¤Ø³ÁÒ¡æ¤ÃѺ |
#2
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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 |
#3
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¢Íº¤Ø³ÁÒ¡æàŤÃѺ
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#4
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¼ÁÅͧ´ÙáÅéÇ ¤Ùè¢Í§ 1 ¡Ñº 2009 ¡çãªéä´é´éÇ ãªèËÃ×Íà»ÅèÒ¤ÃѺ
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#5
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oh that right! haha
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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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