lờ mao

wai?

(x - 3) . (x\(^2\)+3x+9) + x (5-x\(^2\)) = 6x

(x\(^3\)-3\(^3\)) + 5x - x\(^3\) = 6x

-27 + 5x = 6x 

=> x = -27

C nhé

3. Most children are excited about the first day of school.

4. We are giong to the shopping mall this Saturday.

5. The air is polluted with smoke from factories

ko biết nữa nhưng chắc là đúng