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2 năm trước
Tìm m để $4mx^{2}-6x-(m-1)=0$ có nghiệm kép
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Exercise 1: Put the verbs in the brackets in the correct tense 1. If I ........................................ (have) a million dollars, I would build a hospital in Africa. 2. We ........................................(can erase) global hunger, if we all tried harder. 3. If she had a time machine, she................................ (will travel) back to the year 1776. 4.If I had more time, I ................................(will take) an art class. 5. If you ........................................ (not have to) study every day, what would you do with 6. If everybody .................................. (give) , we would have enough. 7. He might get fat if he ....................................... (stop) smoking. 8. If he knew that it was dangerous, he ................................ (not come). 9. If you........................................ (see) someone drowning, what would you do? 10. I................................ (be) ruined if I bought her everything she asked for.your extra time? (ruin (v): hủ y hoạ i - nhưng trong câ u này có theቻ hieቻu là lủ ng tú i)

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