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trang.trang2351
2 năm trước
với giá trị x thỏa mãn 2x^2- 7x +3= 0, tính giá trị phân thức: a) x^2- 2x+ 1/ 2x^2- x- 1 b) x^3- 27/ x^2- 2x- 3 PLEASEE MẤY BẠN GIÚP MÌNH VỚIII !!
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