phân tích đa thức thành nhân tử 

a) 4x^{2  -} 4y²

b)  x² - xy + 2x - 2y

c) 6x² - 7x + 2  

https://www.youtube.com/watch?v=lZR2USCjlqs

gucci vê luivi ice out 

Question 15. The tortoise/ run/ while/ the hare/ sleep

A.    The tortoise ran while the hare is sleeping.

B.     The tortoise ran while the hare was sleeping.

C.     The tortoise was running while the hare slept.

D.    The tortoise was running while the hare was sleeping 

https://www.youtube.com/watch?v=lZR2USCjlqs

Question 15. The tortoise/ run/ while/ the hare/ sleep

A.    The tortoise ran while the hare is sleeping.

B.     The tortoise ran while the hare was sleeping.

C.     The tortoise was running while the hare slept.

D.    The tortoise was running while the hare was sleeping 

trả lời tui đc ko tui xl ;(( 

Question 18. Festival / hold/ promote / the Da Lat trademark/ honour / flower growers.

A.    The festival is holding to promote the Da Lat trademark and honour flower growers.

B.     The festival holds to promoting the Da Lat trade mark and honouring flower growers.

C.     The festival is held to promote the Da Lat trade mark and honour flower growers.

D.    The festival holds to promoting the Da Lat trade mark and honouring flower growers.

lần này hỏi thật 

Question 18. Festival / hold/ promote / the Da Lat trademark/ honour / flower growers.

A.    The festival is holding to promote the Da Lat trademark and honour flower growers.

B.     The festival holds to promoting the Da Lat trade mark and honouring flower growers.

C.     The festival is held to promote the Da Lat trade mark and honour flower growers.

D.    The festival holds to promoting the Da Lat trade mark and honouring flower growers.