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zzibenzz
2 năm trước
giúp m với m cần gấp e , (2x+1)^2/5 - (x-1)^2/3 = (7x^2-14x-5)/15 f, (x^2-10x-29)/1971 + (x^2-10x-27)/1973 = (x^2-10x-1971)/29 +(x^2-10x-1973)/27
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