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  #1  
Old 04 ¡Ã¡®Ò¤Á 2011, 14:01
PerSEiiZ PerSEiiZ äÁèÍÂÙèã¹Ãкº
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Default á¡éÊÁ¡ÒÃÃÒ¡äÁèà»ç¹¤ÃѺ ªèÇÂáÊ´§ÇÔ¸Õ·Ó˹è͹èЧѺ

1. ¤èҢͧ x ¨Ò¡ÊÁ¡Òà à·èҡѺà·èÒã´

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2. ¨§ËÒ¤èҢͧ x+2 ¨Ò¡ÊÁ¡ÒÃ
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  #2  
Old 04 ¡Ã¡®Ò¤Á 2011, 14:28
~ToucHUp~'s Avatar
~ToucHUp~ ~ToucHUp~ äÁèÍÂÙèã¹Ãкº
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1. ä´é$\sqrt{12+4\sqrt{x+4} }=4 $
¡ÓÅѧÊͧ·Ñé§Êͧ¢éÒ§ ËÒà 4 ·Ñé§ÊÁ¡ÒÃ
ä´é $3+\sqrt{x+4}=4 $
$\sqrt{x+4}= 1$
$x+4 = 1$
$x = -3$
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  #3  
Old 09 ¡Ã¡®Ò¤Á 2011, 14:16
Ulqiorra Sillfer's Avatar
Ulqiorra Sillfer Ulqiorra Sillfer äÁèÍÂÙèã¹Ãкº
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¢éÍ 2 Áͧ 2x+3 à»ç¹ $a^2$ ¨Ð§èÒ¢Öé¹ÁÒ¡¤ÃѺ
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