Cho phương trình ẩn x sau:(2x+m)(x+1) - 2x² + mx + m - 2 =0. Tìm các giá trị của m để phương trình có nghiệm là một số không âm

1.A

2. C 

45. were blown

1.if you don't follow the traffic, you will get a fine

2. it is very important to eat healthy foods

1. more interesting than

2. worse

3. the biggest

1. the most famous 

2. more expensive than 

If we don't have a lot of money, we won't buy a lot of new books.

Mrs Nga told her brother that she wanted to borrow his car that day.

Chúc bạn học tốt nha

Crossing the crowded streets is dangerous

C

A

Some fruit juice has been bought 

Before I came home, my father had had dinner