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There have been 1 items by Yumi Ishiyama (Search limited from 09-06-2020)
Posted by Yumi Ishiyama on 14-05-2017 - 16:14 in Chuyên đề toán THCS
Giải phương trình: x2(y+z)2 = y2z2(3x2+x+1)
y2(z+x)2 = z2x2(4y2+y+1)
z2(x+y)2 = x2y2(5z2+z+1)