Họ và tên:
Lớp:
Kiểm tra Học kỳ I
Môn toán 8
Đề bài:
Bài 1 Thực hiện phép tính sau:

x
xx
xx
x
31
3
:
3
62
2
2

+

+
Bài 2 a)Phân tích đa thức x
2
4xy 16 + 4y
2
thành nhân tử:
b)Thực hiện phép tính: ( 3x
3
+ 10x
2

2
82
2
xxxxx
x
x
xx
M
0(

x
và
)1

x
a) Rút gọn biểu thức M
b) Tính giá trị của M với
2
1
=
x
Bài 4 Cho biểu thức:

144
16128
2
23
+
+
=

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