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quyendan2796
2 năm trước
tìm x,y a,(5.x+1)^2=36/49 b,(8.x-1)^2.x+1=5^2.x+1 c,(x-3.5)^2+(y-1/10)^4 bé hơn hoặc bằng 0 nhờ các cao nhân giúp.thank
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