Tính nhanh:A=2003 x 14 + 1988 + 2001 x 2002 /2002 + 2002 x 503 + 504 x 2022 GIUP MÌNH VS Ạ

phân tích đa hức thành nhân tử a, x^2 - 4x^2y^2+y^2+2xy b, x^6 - y^6 e, (a+b+c)^2 + (a+b - c)^2 - 4c^2

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Vẽ mầm/chibi hóng đi Chưa đến tháng 8 mà đã hóng tết vs trung thu r

Giúp mình nhé! Sao ở trên có x>=2 xuống dưới lại không có nhỉ? Mình chưa hiểu cách kết hợp điều kiện cho lắm. Mong các bạn giúp mình.

Tìm biện pháp tu từ có trong câu:"Cô là Wilma Rudolph - "con linh dương đen" của điền kinh thế giới.".

Khái quát tình hình Việt Nam cuối thế kỉ XIX đầu thế kỉ XX? LÀM THEO MẪU NHƯ ẢNH SAI THÌ BỊ XÓA NHÁ

Read the passage and choose the best answer Scientists are now looking (1) …… cheaper way to use solar energy to heat air and water. Many buildings are using solar energy to heat water now. Solar units on the (2) …… of buildings collect the energy and use it to heat water. Although these units are still very (3) ….., more and more people are buying solar hot water heaters. Universities and colleges give solar energy courses where students learn to build their own solar (5) ….. . In the future, there will be more and more solar collectors, especially in the sunny desert areas of the world. 1. A. for 2. A. floors 3. A. cheap 4. A. collectors B. at B. walls B. expensive B. consumers C. after C. roofs C. heavy C. directors D. on D. gates D. old D. announcers

Mn giúp mk vs càng nhanh càng tốt

Exercise: read and complete the sentences Paragraph 1 Hello, my name is George. Everyone in my class is ill. My best friend Joseph is ill, he has a fever, a sore throat and a runny nose. My teacher, Mrs. Juan, has flu. She sneezes a lot and she has a runny nose. My friend, Sue has a problem too. She is sick. She feels dizzy and she has a stomachache because she eats too many sweets. I am so worried about my little brother Tom because he has measles. Tom sleeps all day, he can't move. 1. ....... is George's best friend. 2. Mrs. Juan is George’s ........ 3. If Sue eats ....... , she won’t have a stomachache. 4. Because of measles, George’s brother not only sleeps all day but also .......