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Loga7920
2 năm trước
Câu 1: Chứng minh phương trình x^2-ax-2=0 (x là ẩn) luôn luôn có 2 nghiệm phân biệt Câu 2: Tìm m để phương trình x^2-(m^2+m)x-7=0 (x là ẩn) có nghiệm
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complete the sentences, using although, so, despite, in spite of, however, or nevertheless. sometimes, two answers are possible. 1............................... it was raining heavily, he went out without a raincoat. 2. My father is very busy. ................................ , he is always willing to give a hand with the housework. 3. Some English words have the same pronunciation .................................. they are spelled differently, for example, dear and deer. 4. I was cold and wet. ................................... , Bob put on his swimming suit and went to the beach. 5. I think I did OK in my speech last night ........................ I'd had almost no sleep for 24 hours. 6. Carol arrived at the meeting .............................. I asked her not to be there. 7. The sky was grey and cloudy. ............................... , we went to the beach. 8. It looks like they're going to succeed ............................... their present difficulties. 9. ........................... there was no electricity, I was able to read because I had a candle. 10. ........................... I heard the telephone ring, I didn't answer it.

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