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Old 14 ÁԶعÒ¹ 2011, 19:10
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1. $3^x+3=10\left(\,\frac{3^{2x}}{3} \right) $ ¨§ËҼźǡ¢Í§¤ÓµÍº
2. $3^{2^{2x+1}-9(2^{x+\frac{1}{2}})+32}=27^{2^{x+\frac{1}{2}}}$ ¨§ËÒ¤èҢͧ X
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Old 14 ÁԶعÒ¹ 2011, 20:12
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¢éͤÇÒÁà´ÔÁà¢Õ¹â´Â¤Ø³ ShaDoW MaTH View Post
1. $3^x+3=10\left(\,\frac{3^{2x}}{3} \right) $ ¨§ËҼźǡ¢Í§¤ÓµÍº
2. $3^{2^{2x+1}-9(2^{x+\frac{1}{2}})+32}=27^{2^{x+\frac{1}{2}}}$ ¨§ËÒ¤èҢͧ X
1.ÊÁÁصÔÇèÒ $3^x=k$
2.¾Ô¨ÒÃ³Ò $27^{2^{x+\frac{1}{2}}}=3^{3\cdot 2^{x+\frac{1}{2}}}$
¨Ðä´éÇèÒ $2^{2x+1}-9(2^{x+\frac{1}{2}})+32=3\cdot 2^{x+\frac{1}{2}}$
ààÅéÇÊÁÁصÔÇèÒ $2^\frac{2x+1}{2}=k$
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Old 14 ÁԶعÒ¹ 2011, 21:10
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15 ÁԶعÒ¹ 2011 19:58 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ ShaDoW MaTH
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