Bảng xét dấu sau là của biểu thức nào?
Câu hỏi: Bảng xét dấu sau là của biểu thức nào?![](data:image/png;base64,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)
A. \(f(x) = - 9{x^2} - 6x - 1\)
B. \(f(x) = 3x + 1\)
C. \(f(x) = - 3x - 1\)
D. \(f(x) = 9{x^2} + 6x + 1\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề kiểm tra 1 tiết Chương 4 Đại số 10 Trường THPT Bùi Thị Xuân - Lâm Đồng năm 2018