g,10ax-5ay-2x+y

h,x^3-2x^2+2x-4

i,a^3-a^2+9a-9

k,a^2-2a+1-b^2

l,X^2+2xy+y^2-81

m,x^2-6x+9-y^2

n,9x^2-6x+1-25y^2

o,4x^2+y^2-9-4xy

p,a^2-9+6x-x^2

trường hợp nàosau đây không phải là vật sáng

A. Chiếc bút chì đặt trên bàn giữa ban ngày.

B. Chiếc bật lửa rơi giữa sân trường lúc trời nắng.

C. Mặt Trời.

D. Mắt con mèo trong phòng kín vào ban đêm

giúp em mấy câu này vs ah

* Choose one sentence that has the nearest meaning to the root one:
31. Mary is contented with what she does.
A. What she does doesn’t make her pleased B. Mary is satisfied with what she does
C. Whatever Mary does, she makes nobody pleased
D. She feels happy when she does something
32. It took him three hours to do his homework.
A. He did his homework in three hours B. He spent three hours doing his homework
C. He did his homework three hours ago D. He finished his homework three hours ago
33. I like to play tennis in the summer.
A. I’m interested in playing tennis in the summer. B. Playing tennis is my hobby.
C. I like playing tennis in the summer very much. D. Playing tennis is what I like.
34. Their game of badminton is always on Tuesday.
A. They always play their game on Tuesday. B. They play their game always on Tuesday.
C. They always play badminton on Tuesday.
D. They have always played badminton on Tuesday.
35. My brother always drives to work.
A. My brother always goes to work in my car. B. My brother always gets to work by car.
C. My brother always repairs cars at work. D. My brother’s driver is always off work.

Cho m gam C2H5OH tác dụng với natri (dư) thu được 11,2 lít khí hidro
thoát ra (điều kiện tiêu chuẩn). Tính giá trị m.

VIẾT ĐOẠN HỘI THOẠI NGẮN CÓ SỬ DỤNG TRỢ TỪ VÀ THÁN TỪ.

(HS NHỚ GẠCH DƯỚI VÀ XÁC ĐỊNH CỤ THỂ)

Giải thích hiện tượng xảy ra và viết phương trình hóa học minh họa khi cho
toluen vào dung dịch KMnO4, đun nóng

The second job is to do maintenan.. work in the school.

Thực hiện nhanh các phép tính chia:

a, (a^4-2a^2b^2+b^4) : (a^2+2ab+b^2)

b, ( -8a^3+48a^2b-96ab^2+64b^3) : (a-2b)