Cho phương trình bậc hai (ẩn ): x 2  - (m + 1)x + m – 2 = 0

a) Tìm m để phương trình có hai nghiệm phân biệt x 1  và x 2 .

Read the following paragraph and answer the questions that follow

Bob is a student. This is his bedroom. He does his homework, play computer games and relax here. There is a desk, a chair, a wardrobe, a bed and a bookshelf in his room. The wardrobe is between the desk and the bed. There is a computer, ten books and five pens on his desk. There are some pictures of his family on the wall. He loves this room so much, so he cleans it regularly.

How many pens are there in his desk?

Doanh nghiệp có thể huy động vốn kinh doanh từ:

A. Chủ doanh nghiệp

B. Các thành viên doanh nghiệp

C. Cả A và B đều đúng

D. Đáp án khác