Kiểm tra một tiết chương I lớp: 8 môn: Đại số

Trường THCS Xuân Áng KIỂM TRA MỘT TIẾT CHƯƠNG I
Lớp: 8 ___. Môn: Đại số
Họ và tên: ____________________
 Điểm
 Lời phê của thầy (cô) giáo
ĐỀ BÀI.
Câu 1 (3 điểm): Làm phép tính chia: 
	 a. 18x5y3 : (- 3xy2)
	 b. ( 125a3b4c5 + 10a3b2c2) : (5a3b2c2)
 	 c. ( 2x3 + 3x2 - 5x + 12) : (x + 3 ) 
Câu 2 (3 điểm): Phân tích đa thức thành nhân tử: 
a. ( 1 + 2x) ( 1 - 2x) - ( x + 2) ( x - 2) 
 b. x2 + 13x + 12 
Câu 3 (2điểm): Tìm a để đa thức f(x) = 2x3 + 5x2 - 2x + a chia hết cho đa thức B = x - 1 
Câu 4 (2 điểm): Tìm giá trị nhỏ nhất của biểu thức: A = x2 - 4x + 5.
 BÀI LÀM 
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