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bacrikuzoo
2 năm trước
$ * $ Đề bài: Tính giá trị biểu thức: `B = x ( x^2 - y ) ( x^3 - 2. y^2 ) ( x^4 - 3. y^3 ) ( x^5 - 4. y^4 )` tại $ x = 2 $, $ y = -2 $.
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