1 / Which city in Viet Nam would you like to visit ? Why ? Where is it ?
2 / If you can visit a foreign country would you like to visit ? Why ? Where is it ?
3 /What does the "3RS" mean ?
4 / What will happens if the air polluted ?
5 / How can we save water ?
6 / What will happens if the water polluted ?
7 / What can you do to protect the environment ?
Nhờ mấy Mem sửa giúp mình - Thanksssssssssssssssssssss
7,268 m2= 726,8 dm2
(x^2-x-1)*(2*x^2+x+3) <-- đáp án đây