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kienyoyo08
2 năm trước
cho tam giác ABC AB=2 BC=4 AC=3 Tính GA.GB+GB.GC+GC.GA (GA,GB,GC là véc tơ)
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Các câu hỏi liên quan

1. We might win 5000, and then we’d travel to Thailand. (if) → We’d travel __________________________________________ 5000. 2. His electric fan is not working and he feels hot. (would) → If his _______________________________________________ so hot. 3. I think you should pay attention to the lessons in class. (you) → If I _______________________________________ the lessons in class. 4. Her brother doesn’t use computer well enough to work for that company. (better) → If her brother ________________________________ for that company. 5. Our parents don’t have enough money so they can’t make a trip to New York. (could) → If our parents _____________________________________ New York. 6. I’m not a millionaire so I can’t buy a villa in Ho Chi Minh city. (were) → If I _______________________________________ Ho Chi Minh city. 9/ We won’t go out if it doesn’t stop raining. (unless) → We won’t __________________________________________ raining. 10/ He wouldn’t write unless he heard some news. (if) → He wouldn’t _____________________________________ some news.

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