Kiểm tra 1 tiết môn: Toán 8

Họ Tên: 
Lớp: 8A
KIỂM TRA 1 TIẾT
 Môn: Toán
Điểm
Lời phê của thầy giáo
ĐỀ BÀI
Câu 1 (3,5 điểm): 
a, Viết 7 hằng đẳng thức đáng nhớ
b, Phát biểu quy tắc nhân đa thức với đơn thức, nhân đa thức với đa thức.
Câu 2 (2 điểm): Rút gọn 
3x(x-7)- 3(x+2)(x-2)
(x5 + 4x3 – 6x2) : 4x2
(x – 2)2 – 2(x – 1)(x + 1) – x(1 – x) 
Câu 3 (1 điểm): Phân tích đa thức thành nhân tử: 
a. 3x2 - 6xy.	 b. 9x2 - 18xy - 9z2 + 9y2.
Câu 4 (1,5 điểm): Tìm x biết:
a. 4x2 – 25=0. b. x2 + x + 1/4=0.
Câu 5 (2 điểm): 
Đặt phép chia và tính: (2x3 - 5x2 + 6x - 15): (2x - 5)
Tìm a để đa thức x3 + x2 – x + a chia hết cho x + 2.
BÀI LÀM
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