Tính bằng cách hợp lí.Giúp em với em đang gấp.Em sẽ vote 5sao

căn x^2-8x+18 -12 b,cănx^2+y^2-2xy+2x-2y+5 +2y^2-8y+2018

Hợp chất A gồm hai nguyên tố là P và O. Tổng số hạt trong một phân tử của A bằng 212.Tính số nguyên tử của mỗi nguyên tố và khối lương tuyệt đối của một phân tử hợp chất A

Giúp mik với ak, hứa vote vaf cảm ơn đầy đủ ak

Giúp mình với ạ hứa 5 sao và cảm ơn

Giúp mình tính denta' pt này với ạ 😩

Hihi mọi người giúp mình 5 câu này nha .

21. They were just _______ us about Anna's new friend. A. talking B. saying C. speaking D. telling 22. He was unwilling to explain the reason _______ his absence. A. for B. why C. of D. that 23. Never ______ off until tomorrow what you can do today. A. set B. put C. do D. turn 24. The stolen jewels were ____________ a lot of money. A. valued B. cost C. priced D. worth 25. By the time you receive this letter, I will have left __________ Japan. A. to B. for C. at D. in giúp em vs ajaaaaaaaaaaaaaaaaaaaaa!!!!!!!!!

B. Read the text carefully, then choose True (T ) or False ( F ) David lives in Canada. He usually gets up early and does morning exercise with his bike. He rides around his area. After breakfast, he takes a bus to school. He has lessons from 9.00 am to 1.00 pm. He often has lunch in the school canteen and then he has a short rest. In the afternoon, he has lessons in the library or PE in the gym. After school, he often goes to the sports center near his house and plays basketball or table tennis. In the evening, he often does his homework. Sometimes he surfs the Internet for his school projects. He often goes to bed early. 1. David lives in Canada. ……………… 2. He often rides a bike in the morning. ……………… 3. His classes start at 10 o’clock in the morning. ……………… 4. In the afternoon, he does his homework ………………. IV. DO AS DIRECTED 1.Make question for the underline word: a. Tom plays tennis every Friday. → How often.......................................................................? b. No, He didn’t go to the cinema last night. → .......................................................................? 2. Rewrite: No student is more intelligent than Mary in our class. → Mary is ...........................................................

Calli: Thi tốt nha khanh13012010/ vẽ luôn đậu mầm cố gắng kí Đổ bóng, mấy thứ trang trí đầy đủ nha