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nguyenhoangdo240801
2 năm trước
Bài 8: Chứng minh biểu thức không phụ thuộc giá trị của biến : (x + 4y)(x- 3y)-(x + y)x + 3(9 + 4y^2) Giúp mik câu 8 nha hứa vote 5 sao
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