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TRƯỜNG THPT LHT2
LỚP: 10C1
BÀI KIỂM TRA VIẾT CHƯƠNG IV
MÔN Toán 10 CTCB
Thời gian làm bài: 45 phút;
Họ, tên học sinh:..........................................................................
MS
ĐỀ BÀI:
x2 − 6x + 8
Câu 1: (4 điểm) Lập bảng xét dấu biểu thức: P( x) =
8 − 2x
Câu 2: (4 điểm) Giải bất phương trình và hệ bất phương trình sau:
2 x + ( x − 1)( x − 2) ≤ 2 x 2 − x − ( x + 3)( x − 1)
a) 2
x p 1
b) x 2 + 4 x − 5 ≤ 5 − 2 x
Câu 3: (2 điểm)
Tìm các giá trị của m để phương trình: − x 2 + (m − 1) x + m 2 − 5m + 6 = 0
a)Có hai nghiệm phân biệt
b)Hai nghiệm trái dấu.
BÀI LÀM:
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