Chứng tỏ: $A=a^2+2010$ $B=a^2+234510$ Không là số chính phương

Cho mình hỏi với ạ . Mình cần gấp lém

9 căn x -x căn x+9 căn x bằng bao nhiêu?

`Tìm\ x:\ x - 90 = 100 - 10 +10^2 + 20`

Bài 2. Rút gọn biểu thức sau : A = |x-4,1|+|x-2/3|-9 B = |2 1/5-x|+|x-1/5|+8. C = |x+3 1/2|+|x|-3 1/2 .

Hộ với ạ giải thích để nha The mother asked her son ... A.where he has been B.whether i had been C.where has hệ been D.where had he been

Cho tam giác ABC có góc A = góc C , góc B = 2. góc C . Tính số đo các góc A,góc B, góc C .Tam giác ABC là tam giác gì ? Vì sao ?

Viết đoạn văn 10 -12dòng nêu cảm nhận của em về nhân vật Đôn-ki-hô-tê trong đoạn trích đánh nhau với cối xoay gió của Xéc-van- tét

giúp em với ạ, em đang vội. có thể dùng dữ kiện câu b để giải câu a ạ, đề sai

II. Complete the sentences with: much, many or a lot of: 1. I don’t have ____________ time to read. 2. Her new school has __________ students. 3. There is ___________ orange juice in the jar. 4. This hotel doesn’t have _____________ rooms. 5. She drinks _______________ tea. 6. My father never drinks ______________ coffee for breakfast. 7. He has _______________ money in his pocket. 8. There are too_______________ pictures on the wall. 9. There aren't _______________ workers who want to quit their jobs. 10.Mark has __________ dogs and I'm sure that he can't take good care all of them. 11.She didn't have _____________ time, so she left. 12.I told you _____________ times before that I don't like her. 13.She has got ____________dresses, but she has not got ___________skirts. 14.We don't drink _________________ water when we eat. 15.I think you put too______________ sugar into my cup of coffee. 16.People don't write _________________ letters nowadays, they prefer e-mails. 4 17.You have ________________friends, don't you? 18.Thank you very ___________________for coming. 19.There are so ___________________things I want to ask you. 20.We have ___________ homework to do tonight. giúp em nhanh với ạ đang cần gấp