tính bằng cách thuận tiện nhất 35 * 60 - 70*20+35*20

Cho `a,b,c>0`. CMR: `\sum \sqrt{a/(b+c)} \ge 3/\sqrt2`

Giúp mình 2 bài này với ạ Hứa đánh giá 5⭐

Cho A = 31001.52020.72021.Tìm chữ số hàng đơn vị của A. NL: rảnh quá có ai nói chuyện với mình không?

Bài tập 3: (HSKG): Một số nếu được tăng lên 25% thì được số mới. Hỏi phải giảm số mới đi bao nhiêu phần trăm để lại được số ban đầu. Mọi người giúp em nhé

1/ I would have lent you some money if I had known you were broke.  Had I ........................... 2/ What would you do if there was an earthquake ?  Supposing ................................................... 3/ I might be late. If so, start without me.  If I ............................................................................ 4/ The fire was brought under control thanks to the night-watchman.  If it ................................... 5/ Dick is in prison because a detective recognized him.  If a detective ....................................... 6/ It's a pity your parents can't be here.  If only............................................................................ 7/ If Jane hadn't refused to work overtime, she would have got promotion.  If it ....................... 8/ If you want my advice, I'd think twice about buying a car like that.  If I ................................ 9/ If the painting is finished by Saturday, we'll pay you extra.  Finish ........................................ 10/ Provided your voice is audible, the audience will get the point of this scene.  As long as .................................................................................................. 11/ If you refuse to stop eating sweets, you can't expect to loose weight easily.  If you ........................................................................................................... 12/ Without your help, I wouldn't have found the house.  If you ................................................. 13/ Getting up early makes me feel hungry.  If I ............................................................................ 14/ It would be nice to be able to fly.  I wish ................................................................................. 15/ I wish I hadn't heard that.  I'd rather ......................................................................................... 16/ Why do you have to complain all the time ?  I wish ................................................................ 17/ I regret not buying some tickets for the concert. I wish ........................................................... 18/ Unfortunately, I've got to work late tonight.  I wish................................................................. 19/ You should really start your work now.  It's time .................................................................... 20/ The children should be in class now.  It's time ........................................................................ 21/ If I were you, I'd take up jogging.  I think .............................................................................. 22/ As I didn't know all the facts, I didn't ring the police. If ........................................................ 23/ He can't get the job because he isn't good at English.  If ........................................................ 24/ I regret not paying much attention to the lecture.  I wish ....................................................... 25/ If it doesn't rain, he will pick her up at 9 a.m.  Unless ............................................................. 26/ She can't do the sum because it is difficult.  Were .................................................................. 27/ I'm sorry now that I didn't tell you the truth.  I wish ............................................................... 28/ He lost his money simply because he wasn’t careful.  If he...................................................... 29/ It wasn’t easy to persuade her to come.  There was some difficulty......................................... 30/ It’s high time you put a stop to this nonsense.  It’s high time this nonsense......................................................................... 31/ If the customers hadn’t complained, nothing would have been done.  Had ............................ 32/ I have taken careful notes of their complaints.  Their complaints ..................................... 33/ People think Columbus found America before others.  Columbus .......................................... 34/ I wish I hadn’t told her about the plan.  I regret .................................................................. 35/ We suggested banning smoking in the meeting this afternoon.  We suggested....................... 36/ We don’t allow customers to smoke here.  Customers ........................................................... 37/ You don’t have to bring the camera here tonight.  The camera ..............................................

lập dàn ý giải thích câu lá lành đùm lá rách

ho hai đa thức:M(X):3x^3+x^2+4x^4-x-3x^3+5x^4+x^2-6 N(X):-x^2-x^4+4x^3-x^2-5x^3+3x+1+x a.thu gọn và sắp xếp các hạng tử của mỗi đa thức theo lũy thừa giảm của biến b.tính M(X) +N(X) và M(X)-N(X)

Vẽ anime/chibi tủi thân or sad, không màu. NL: Đôi khi bạn chỉ biết im lặng. Bởi vì chẳng có từ ngữ nào có thể diễn tả được những gì tồi tệ đang tồn tại trong tâm trí và trái tim bạn.

Giải Phương trình sau: Giúp mình với ạ!