Bảng biến thiên sau là của hàm số nào?
Câu hỏi: Bảng biến thiên sau là của hàm số nào?![](data:image/png;base64,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)
A. y = x 2 + 2x − 1
B. y = x 2 − 2x + 2
C. y = 2x 2 − 4x + 4
D. y = −3x 2 + 6x − 1
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi giữa HK1 môn Toán Đại 10 năm 2020 Trường THPT Nguyễn Hiền