Chứng minh a -x^2+4x-5<0 với mọi giá trị của x b -4x^2+12x-10 <0 với mọi giá trị của x c -x^2 +x+1<0 với mọi giá trị của x

I. Fill in the blanks with “so/ such” 1. She is _____ (so/such) intelligent that she can do all the difficult exercises. 2. The road is ______ (so/such) stuck that we can’t move. 3. We had _________ wonderful memories of that place that we decided to return. 4. It was ____ (So/such) a cold day that I just want to stay at home. 5. There are _____(so/such) many people in the room that there are not enough chairs II. Use as if/ as though to complete the sentences 1. My head seems to be on fire right now. =>I feel……………………………… 2. Kanata pretended not to know the news. =>Kanata looked……………………… 3. Lana speaks like a boss/ =>Lana speaks………………………… 4. Jennifer looked like a queen in her wedding. => Jennifer looked……………………… 5. Zoe dresses up like a princess. => Zoe dresses up ……………………… III. Rewrite the sentences without changing the meaning. 1. This is the most delicious cake I’ve ever tasted. => I’ve………………………….. 2. I’ve never met any more dependable person than George. => George is………………………… 3. There isn’t anybody as kind-hearted as your mother. => Your mother is …………………… 4. There is no better teacher in this school than Mr John. => Mr John is…………………………….. 5. Have you got any bigger than that one? => Is this………………………………...? IV. Complete the sentences using the given words 1. If/ you/ mix/ red/ blue/ get / purple. 2. If/ Arsenal/ win/ they/ be/ top/ the league. 3. It /rain/ we / will/ cancel / the match. 4. We / would / save £3.50 a day / we didn’t / eat any lunch. 5. I / were / 20/ I would/ travel/ world

Trong câu lệnh “For i:=1 to 20 do dem := dem+2 ”, biến "dem" của câu lệnh tăng lên bao nhiêu sau mỗi lần lặp? 1 đơn vị 2 đơn vị 3 đơn vị 4 đơn vị

LÀM HẾT HỘ MÌNH VỚI GHI RÕ CÁC BƯỚC LÀM NHA

bài 1 . tìm các ước của : a, 13 b, 20 c, 26 em cần gấp ạ !!!

Bài 1 the/ can /get /I /to /post office /How /?/ ⇒...................... is /more / I / attractive /expected / that /It / ⇒...................... Will/ be/ cold / and / snowy / It . ⇒...................... Bài 2 Điền các tuừ vào ô troongs Thank you knife yourself Why Don’s Tom: What are yoi holding in your hand ? Phong : A ......... Tom : Oh . no. It’sdangerous................ play will it ! Phong:........ shouldn’s play will it ? Tom: Because you may cut ...... Phong :I can see that ........... , Tom

Miếng đất thứ nhất có diện tích 250m vuông. Miếng đất thứ hai có diện tích bằng 1/2 diện tích miếng đất thứ nhất. A) Tính diện tích miếng đất thứ hai. B) Người ta lấy 3/5 diện tích miếng đất thứ hai để trồng hoa.Tính diện tích trồng hoa. *Nhanh lên cô bắt chụp bài*

Tìm số có 2 chữ số. Nếu lấy 2 chữ số của số đó nhân với ta được 42 , biết rằng có 1 chữ số là 7

1) KMnO4 + HCl --> KCl + MnCl2 + Cl + H2O 2) Fe2O3 + CO --> FexOy + CO2 3) FeSO4 + Cl2 --> FeCl3 + Fe2(SO4)3 4)Fe(OH)2 + O2 + H2O --> Fe(OH)3 HoiChoMoiNguoiKiemDiem

1 that is the .... one i have got ( cheap) 2 what an ... building (amaze) 3 thank you very much for a .... evening (delight) 4 his elder brother works in a factory . He is ....(work) 5 whould you like to go out tonight ? there is a very .... movie on at the Fins land cinema (interest) 6 what is the .... of that building? (hight) 7 Are you going to the.... tomorrow? (meet) 8 let's go for a .... to walkin the fresh air(health) 9 his broken arm is still very ... (pain) 10 what is the ... anh the ... of that bridge ? (long /wide)