De kiem tra chuong I dai so 8

Trường: ............................. KIỂM TRA 1 TIẾT
Lớp: ........ Môn: Đại số 8
Tên: ...................................

ĐIỂM
 LỜI PHÊ CỦA THẦY(CÔ)

I/ LÝ THUYẾT (4 ĐIỂM)
Nêu quy tắc nhân đơn thức với đa thức? (0,5đ)
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Nêu quy tắc nhân đa thức với đa thức? (0,5đ)
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Viết 7 hằng đẳng thức đáng nhớ? (1đ)
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4/ Phân tích đa thức thành nhân tử là gì? Có mấy phương pháp phân tích đa thức thành nhân tử? (1đ)
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5/ Phát biểu quy tắc chia đơn thức cho đơn thức? (0,5đ)
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6/ Phát biểu quy tắc chia đa thức cho đơn thức? (0,5đ)
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II/ BÀI TẬP (6 ĐIỂM)
1/ Rút gọn các biểu thứcsau: (2đ)
a/ x2(x+1) – (x+3)(x2-3x+9) ; b/ 2(x2-1)-(x-1)2-(x+1)2
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2/ Phân tích các đa thức sau thành nhân tử: (2đ)
a/ x2 – x – 2 ; b/ 6xy – 9x2 – y2
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3/ Làm tính chia: (2đ)
a/ (x2 – 2x + x3 – 8) : (x – 2) ; b/ (2x3 – x2 + x + 1) : (x2 – x + ..................................................................................................................................................................................................................................................................................................................
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