(1)Phân tích phương trình bậc tía thàn nhân tử: (x -1) (x -1)^2 = 0 Áp dụng thuộc tính thành phầm bằng không: x -1 = 0 hoặcx -1 = 0 : x = 1 hoặcx = 1 kết hợp kết quả: x = 1
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