giải phương trình nghiệm nguyên: x-y+2xy=6

48/1.16=√30x0.45xX bạn nào giúp mik vs mik cảm ơn

864x48-432x96 ---------------------- = 864x48+332

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 ..............................................

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