Phân tích các đa thức sau thành nhân tử : 1, x^3 - 2x^2 + 5x 2, 3x(x-1) + 5(x-1) 3, 2x^2(x+1)+4(x+1) 4, -3x-6xy+9xz 5, 2x ^ 2 y - 4xy^2+6xy 6, 4x^3y^2-8y^2y^3+2x^2y 7, 9x^2y^3-3x^4y^2-6x^3y^2+18xy^4 8, 7x^2y^2-21xy^2z+7xyz-14xy 9, a^3x^2y-5/2a^3x^4+3/2a^4x^2y

Rewrite the sentences using questions words and to-infinitives. 1. I don't know what I should review first for the coming test. 2. Mary can't decide whether she should go to the school library or stay at home to do her homework. 3. Please tell me how I can get to the bus station. 4. Jim told us where we could find that atlas. 5. He told me when I should come to the meeting. 6. The plumber told me how I could fix the leak in the sink. 7. Please tell me where I should meet you tomorrow morning. 8. Jim found two shirts he liked, but he had trouble deciding which one he should buy. C. READING I. Read the passage, and do the tasks that follow. Nick's voice is changing. It is one of the many developments that happen to both girls and boys when they reach puberty: a boy’s voice gets deeper than a girl's. At puberty, boys' bodies begin producing a lot of the hormone testosterone, which causes changes in several parts of the body, including the voice. For starters, a boy's larynx, also known as the voice box, grows bigger, which causes your voice to get deeper. Along with all the other changes in your body, you might notice that your throat area looks a little different. For boys, when the larynx grows bigger, part of it sticks out in the part of the neck at the front of the throat and forms the Adam's apple. For girls, the larynx also grows bigger but not as much as a boy's. That is why girls don't have Adam's apples. While your body is getting used to these changes, your voice can be difficult to control. A guy’s voice "cracks" or "breaks" because his body is getting used to the changing size of his larynx. Fortunately, the cracking and breaking is only temporary. It usually lasts no longer than a few months. Generally, a boy's voice will start to change somewhere between the ages of 11 and 15 - although it can be earlier or later for some. Task 1. Read the text and identify whether the statements are true (T), or false (F). T F 1. A boy's voice gets deeper than a girl's because the boy reaches puberty.   2. The larynx may be responsible for creating the sound of your voice   3. When boys reach puberty, they only change in their voice.   4. Girls don't have Adam's apples because their larynx doesn't grow bigger.   5. We can't see Adam's apples of girls.   6. When boys reach puberty, they can't control their voice.   7. In general, boys don't have the same age of puberty.   8. The changes of voice often last a few months.  

Mk cần gấp,trắc nghiệm thôi nhanh lắm :))

1trong các số tự nhiên từ 10 đến 1.000 có bao nhiêu số có chữ số tận cùng là 2 hoặc 7 2

Calli chữ "Mệt" Nl: haiz... còn 215đ nx mới lên đc top 1

vẽ chibi hoặc đậu mầm ik. Vẽ = tay nha

Viết số thích hợp vào chỗ chấm: Hình bên có:....hình tam giác và.....hình tứ giác.

Viết công thức phân tử và tính phân tử khối a) Nito Dioxit, biết phân tử gồm 1 N và 2 O b) Axit Photphoric, biết phân tử gồm 3 H, 1 P và 4 O c) Canxi Photphat, biết phân tử gồm 3 Ca, 2 p và 8 O d) Amoni Cacbonat, biết phân tử gồm 2 N, 8 H, 1 C và 3 O

giải phương trình: a)2-x /x +2 = 3/x b) x/x-2 - 2/ x+2 = 2x+4/ x mũ 2-4 giải hộ e vs ạ e cảm ơn nhiều

Dịch sang tiếng anh : ''Mạng xã hội có thể lan truyền thông tin sai lệch mà không qua bất cứ sự kiểm định nào.'' Bạn nào bổ sung được ý nào thì giúp mình với, mình đang viết bài luận >_< Nghiêm cấm sử dụng gg Dịch