KIỂM TRA 1 TIẾT

                                               MÔN: ĐẠI S 8 (Thời gian: 45 phút )

 

 

 

 

 

 

 

Lời phê

ĐỀ BÀI:

                                                    

Bài 1(2đ): Dùng định nghĩa hai phân thức bằng nhau chứng tỏ rằng:

 a) =    b) =

Bài 2(3đ): Quy đồng mẫu thức các phân thức sau:

 a)   b)    

Bài 3(3đ): Thực hiện các phép tính sau:

 a)+   b) ( - ) :    

Bài 4(2đ): Cho phân thức  với x # -1 và x # 1

a)     Hãy rút gọn phân thức đã cho.

b)    Tính giá trị của phân thức tại x = 2.

 

 

BÀI LÀM:

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nguon VI OLET