Bài 1: Phân tích các đa thứa sau thành nhân tử:
A) ( a - 3) ² 4 
B) ( a - 2b)² - b²
C) (4a + 3b)² - ( 2a + b)2
D) ( 2a - b)² - ( a - b )²
E)  ( x - y )² - ( 2x - y )²
 
Bài 2: Phân tích các đa thức thành nhân tử:
1) 4a² + 12ab + 9b²
2) -4a² - b² + 4ab

Bài 3: phân tích các đa thức thành nhân tử|
1)a³ - 27b³
2) a³  - b⁶
3) 64a³ - 27b³


 

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..................................................................