1.If you( not have) a license, you ( not drive) . 2.I ( not go) to his birthday party if he ( not invite) me. 3. If Lan ( come) , please ask her to call me.

Cho tứ giác ABCD có AD=AB = BC và góc A + góc C bằng 180 độ. Chứng minh: Tứ giác ABCD là hình thang cân.

1/ Tìm GTNN.

A= 25x^2 +3y^2- 10x+11

B= (x-3)^2+(x-11)^2.

2/ Phân tích thành nhân tử

a/x^2 -x^2- 9y^2 +3yz.

b/  x^3 -x^2 -5x +125

1/ Tìm GTNN.

A= 25x^2 +3y^2- 10x+11

B= (x-3)^2+(x-11)^2.

2/ Phân tích thành nhân tử

a/ 9x(x-y)-10(y-x)^2

b/ x^2 -x^2- 9y^2 +3yz.

c/ 12x^3+ 4x^2- 27x-9

d/ x^3 -x^2 -5x +125

chuyển thành câu bị động.   

1/ My brother found that book on the shelf.

2/ She is writing 2 poems.

3/ My mother gave me a lot of interesting books 

4/ She bought her daughter a new shirt.  

5/ They keep those maps on the shelf for reference.

6/ She didn't introduce me to her mother. 

7/ The government hasn't changed the regulation. 

8/ They make Honda cars in Japan.

9/ the tamer ordered the lion to lie on the floor.

10/ She has to finish her homework tonight.

- Chuyển sang chủ động.
+ Her homework has been finished.
+ Solar energy will be used in the future.

Giups mik vs