x⁶-y⁶=(x-y)(x⁵+x⁴y+x³y²+x²y³+xy⁴+y⁵)

2g

3e

4f

5a

6d

7c

1. died / has lived

2. fell 

3. have studied

4. hasn't found

5. has been

6. Has Lan worked

7. didn't break

8. did they have 

9. haven't eaten 

10. would lose

-5-2=-7

tk cho mik nhé

150 cm2 k nha

Bạn có làm đúng ko vậy

BT B k minh nha nhanh nhat do