KIEM TRA DAI SO 9 CHUONG I

kiểm tra : Đại số (45ph) Họ và tên :………………………………….Lớp……..
A. Phần trắc nghiệm:
(Khoanh tròn vào ý trả lời đúng và đầy đủ nhất trong từng câu hỏi sau)
Câu 1: Trong các ý sau đây ý nào sai ?
A) B) C D) Cả A và C
Câu 2: Điều kiện xác định của biểu thức : y là:
A) x>0 B) x C) 0 D) Phương án khác
Câu 3: Phương trình có:
A) Vô nghiệm B) Vô số nghiệm C) 1 nghiệm D) 2 nghiệm
Câu 4: Kết quả bằng
A) B) C) 7 D)
B. Phần tự luận:
Bài 1: Rút gọn biểu thức: A =
Bài 2: Trục căn thức ở mẫu: B =
Bài 3: Cho biểu thức: với x
Rút gọn Q
Tìm x để Q = -1.
Bài làm

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