De kiem tra 15 phut Dai so 8 Tiet 49

TRƯỜNG THCS LÊ LỢI
Họ và tên:…………………………
Lớp 8:……

BÀI KIỂM TRA 15 PHÚT
Môn: Đại số 8 (Tiết 49)
Ngày 1 tháng 02 năm 2018

Điểm

Lời phê của thầy giáo, cô giáo

Đề bài:
Giải các phương trình sau
1/ 2x – (5x-8) = 14
3/ ( x+7)2 = 4x2

2 x − 8 3 x +1 9 x −2 3 x − 1
−
=
+
6
4
8
12
x  1 x 1
8

 2
4/ x  1 x  1 x  1

2/

Bài làm
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