Rút gọn a) $\sqrt{x^2-10x+25}$ + $\sqrt{4x^2+4x+1}$ b) 3|x- $\frac{1}{2}$ | -2$\sqrt{x^2+2x+1}$ - 1/3 c) ($\sqrt{x-1}$)(√x-2)/$\sqrt{x-4√x+4}$ $\frac{1}{3}$

giúp mik nhé! mik hứa vote 5 sao bạn ko cần làm hết đau, làm đc nhiu thì làm

Em hãy viết một đoạn văn (khoảng 150 đến 200 chữ) về các giải pháp để bảo vệ cảnh thiên nhiên

từ 100 đến 999 có bao nhiêu số 99 làm cách gọn nhất kiểu abc

Bài 2 ý anh nhé các anh chị giúp e vs

C/M PHƯƠNG TRÌNH SAU CO NGHIỆM NHỎ HƠN 2 X^3+3X^2-X-4=0 NNHAHHHHHHHHHHHHH

Làm hộ mk với ạ khó hoá mãi chưa làm đc ạ 5* + CTLHN NHA

III. Fill in the blanks with so MUCH or so MANY. 1. We have __________________mathematical problems that we can’t go to bed early. 2. There was_________________ audience that no seats in the hall were left. 3. The new job is taking me_________________time that I am considering to resign. 4. Doctor Simmon has_________________ patients that he’s always busy. 5. I ate__________________ sandwiches that I felt ill. 6. My father has_________________work to do that he can’t come back home tonight. 7. They drank__________________ wine that they couldn’t walk. 8. His mother asks him to take ________________hings that he can’t put all of them into his suitcase. 9. There are _________________places of interest in London that Jane can’t decide where to go first. 10. There was_____________________ noise in the room that I couldn’t work. 11. There are__________________ planets in the universe that we can’t count them. 12. She had___________________ problems that she didn’t know what to do. 13. He has_________________ contact with friends through email that it takes him more than one hour to check mail every dav. 14. Smoking cigarettes causes________________danger that smokers suffer a lot of serious diseases. 15. Since they moved to the new town, their routines have got_________________changes that their lives have been turned upside down

Help em pls!!!!!!!!!!!!!!!!!!!!!!!!!!

Hai bá làm thù sau 8 giờ xong.sau khi làm chung sau 2 giờ thì bác 1 nghỉ . Nên bác 2 phải làm 1 mình trong 15 giờ mới xong.vậy bác 1 làm tất cả việc thì sau bao giở xong