Tìm số tự nhiên n để $5x^{n-2}y^{7}-8x^{n+2}y^{8}$ chia hết cho $5x^{3}y^{n+1}$
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Posted 02-12-2016 - 20:29
Hana Kaiso
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The power of finding beauty in the humblest things makes home happy and life lovely 
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