Trường THCS Phương Liệt
Họ tên:……………………..........
Lớp: ………
Điểm
KIỂM TRA 15 PHÚT ( BÀI SỐ 1 )
MÔN ĐẠI SỐ 8
Lời phê của giáo viên
Chữ ký của PHHS
Đề bài
Bài 1: ( 4 điểm) Phaân tích đa thức thành nhân tử:
a)
x x 2 x 2
a)
9 a 2 2ab b 2
Bài 2: (5 điểm) Tìm x:
b) 3 x 3 4 x 12 0
3
c) x 9 x 0
2
Bài 3: (1 điểm) Cho biểu thức A = x 4 x 2019 . Tìm giá trị nhỏ nhất của A.
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Trường THCS Phương Liệt
Họ tên:……………………..........
Lớp: ………
Điểm
KIỂM TRA 15 PHÚT ( BÀI SỐ 1 )
MÔN ĐẠI SỐ 8
Lời phê của giáo viên
Chữ ký của PHHS
Đề bài
Bài 1: ( 4 điểm) Phaân tích đa thức thành nhân tử:
a)
x x 3 x 3
a)
4 a 2 2ab b 2
Bài 2: (5 điểm) Tìm x:
b) 3 x 3 4 x 12 0
3
c) x 4 x 0
2
Bài 3: (1 điểm) Cho biểu thức A = x 6 x 2019 . Tìm giá trị nhỏ nhất của A.
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