Kiểm tra viết chương IV lớp: 8 môn: Đại số

Trường THCS Xuân Áng KIỂM TRA VIẾT CHƯƠNG IV
Lớp: 8__ Môn: Đại số
Họ và tên: ______________________
Điểm
Lời phê của thầy (cô) giáo
ĐỀ BÀI.
Câu 1 (3đ): So sánh: 
 a, 2a + 1 và 2a + 2
 b, 2003 . 2005 và 20042
 c, -2a + 3 và -2b + 1 khi a < b 
Câu 2 (2,5đ ): Giải các bất phương trình:
 a, 2 – 3x > 5 b, (x - 3)2 < x2 - 3 
Câu 3 (3đ): Giải các phương trình sau:
 a, b, 
Câu 4 (1,5đ): Cho: A = 
 Chứng minh rằng: < A < 1
BÀI LÀM 
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Trường THCS Xuân Áng KIỂM TRA VIẾT CHƯƠNG IV
Lớp: 8__ Môn: Đại số
Họ và tên: ______________________
Điểm
Lời phê của thầy (cô) giáo
ĐỀ BÀI.
Câu 1 (3đ): So sánh: 
 a, 3a + 1 và 3a + 2
 b, 2013 . 2015 và 20142
 c, -2a + 5 và -2b + 1 khi a < b 
Câu 2 (2,5đ ): Giải các bất phương trình:
 a, 3 – 2x > 5 b, (x - 2)2 < x2 -4 
Câu 3 (3đ): Giải các phương trình sau:
 a, b, 
Câu 4 (1,5đ): Cho: A = 
 Chứng minh rằng: < A < 1
BÀI LÀM 
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