ko.Vì Z bao gồm các số nguyên âm, các số nguyên dương và số 0

mik lộn bạn đổi tân ngữ thành chủ ngữ nha

1) I am going to teach subjects at School tomorrow

.......i am going to be taught .subjects at School tomorrow....

2)I haven't colleted papers to the street children.

......I haven't been colleted papers to the street children.

3) Have you done this job for a long time.

Have you been done this job for a long time.

4) They must pay their depts.

....They must be paid/must have been paid their depts

5) I can far language week.

I can be fared language week.

6) She didn't bring a ***** to school to day.

She wasn't brought a ***** to school to day.

7) Do you grow trees in this farm?

Is you grown trees in this farm?

x^2-25x^4=0

=>x^2-25x^2.x^2=0

=>x^2.(1-25x^2)=0

=>x=0 hoặc x^2=1/25

=>x thuộc {-0,2;0;0,2}

2) 2 giá trị

3)x^2+7x+12=0

=>x^2+3x+4x+3.4=0

=>x(x+3)+4(x+3)=0

=>(x+4)(x+3)=0

=>x=-3;x=-4

nhớ ****

Khi bán sản phẩm đó, cửa hàng được lãi:

      40 000x20%=8000(đồng)

                   Đáp số:8000 đồng

cần có đoạn văn chứ bạn

Tìm 1 từ khác với 3 từ còn lại

A. book B. ruler C. moring D. pencil

Tìm 1 từ có cách phát âm khác với những từ còn lại

A. a clock B. close C. home

A. name B. say C. family

in the world,i have a good friend.His name's Dat .He behaves me well and helps always. I met her in class 6 and became best friend. he is my true friend because she understands me very well and cares for my every need. We manage to share things in our difficult times. We always perform better in the class tests and main exams.

some

Dien dang dung dong tu rong ngoac don:

___tourist_____ plays an important role in the __development_____ of our country (tourist-develop)