tìm x: 
1) 3x² ( x - 3) - 6x ( x - 3 ) = 0
2) 2 ( x + 3)² - ( x + 3 ) = 0
3) 2x ( x - 2) - 5 ( 2 - x ) = 0
4) 3x² ( 2x - 3 ) - 6x ( 3 - 2x ) = 0
5) 4 ( x - 3)² - 2x ( 3 - x) = 0
 

Tìm x, biết:
6✖ ( x - 3) ✖ ( x - 4 ) -6x ( x - 2) = 4

think/ can / theatre/ practice / knitting club / movie/ I/ ./ because/ come/ don't/ have/ I / to / the /

1. all visitors to Hue were impressed by its beauty
--> Everyone who.............................................................
2. when Mary wanted a new car, she had tosave up for a year.
--> It took Mary ..................................................................
3. We haven't visited Hanoi for two years
--> the last time we paid.....................................................
4. My mother cooked a meal yesterday. It was very delicious
--> the meal which.................................................................
5. We are going to hold our wedding party in White Palace.
--> we are going to have ....................................................
6. The victims injured in the accident were taken to the hospital yesterday.
--> the victims who..............................................................
7. Your friend made a lot of noise. I can't remember his name.
--> Your friend,..........................................................................
8. That movie is fantastic. They are talking about it.
--> That movie, which..................................................................

kết luận nào sau đây đúng:
a) x và y là hai đại lượng tỉ lệ thuận với nhau theo hệ số tỉ lệ \(\dfrac{23}{48}\)
b) x và y là hai đại lượng tỉ lệ thuận theo hệ số \(\dfrac{9}{5}\)
c) x và y không tỉ lệ thuận với nhau

d) y và x tỉ lệ thuận theo hệ số tỉ lệ \(\dfrac{5}{9}\)