Giúp mik (x√x-1)÷x+√x+1+(x-1)÷√x-1

E) Make sentences, as in the example: * miss the train * make some tea * change it * crash * shout at us * take some photos * play in the snow * fall off * sell his house * make a cake 1. She can’t stop the car! She is going to crash ........................................................... 2. They are late. They .............................................................................. 3. The headmaster looks angry! He ................................................................................. 4. Jim has got his camera. He ................................................................................. 5. Mick’s putting up a “For Sale” sign. He ................................................................................. 6. The car has got a flat tyre. He .................................................................................

Giúp mk giải bài này từ câu 7 đến câu 12 vs ạ(vote 5 sao)

Cho M= $\frac{ (\sqrt[]{a} - \sqrt[]{b})^{2} +4\sqrt[]{ab} }{\sqrt[]{a} + \sqrt[]{b}}$ - $\frac{a\sqrt[]{b} - b\sqrt[]{a} }{\sqrt[]{ab }}$ a, Rút gọn b, Tìm a,b để M = 2$\sqrt[]{2006}$

3x^2 - 6xy + 3y^2 - 12z^2 Phâm tích đa thức thành nhân tử

Từ văn bản "Chuyện người con gái Nam Xương", em rút ra cho mình những bài học gì trong cuộc sống? Nhiều bài học xíu nha các bạn 🤧🤧

D) Write questions and answers as in the example: Fred : doctor Rod & Ben * : singer Joan *: teacher Ted *: footballer You : .......... 1. Fred / singer? .......... Is Fred going to be a singer? .......................................... ........ No, he isn’t. He isn’t going to be a singer. ............................................. ........ He is going to be a doctor. ................................................................ 2. Rod and Ben / teachers? ........................................................................... ......................................................................................................... ......................................................................................................... 3. Joan / doctor? ......................................................................................... .......................................................................................................... .......................................................................................................... 4. Ted / singer? .......................................................................................... ......................................................................................................... ......................................................................................................... 5. You / teacher? ........................................................................................ .......................................................................................................... ..........................................................................................................

Giúp mình hai bài này vs ạ Cần gấppppppp

Bai 1: Rút gọn biểu thức sau​ a) A= $\frac{9}{50}$ - $\frac{13}{75}$ - $\frac{1}{6}$ b) B = $\frac{3}{8}$ + $\frac{3}{15}$ + $\frac{3}{7}$ c) C = $\frac{38}{45}$ - ($\frac{8}{45}$ - $\frac{17}{51}$ - $\frac{3}{11}$) d) D = $\frac{4}{20}$ + $\frac{16}{42}$ + $\frac{6}{15}$ + $\frac{-3}{5}$ + $\frac{2}{21}$ + $\frac{-10}{21}$ + $\frac{3}{20}$ e) E = $\frac{19}{60}$ + $\frac{29}{100}$ + $\frac{39}{150}$ + $\frac{49}{300}$

Cho sơ đồ Fe + O2 ---> Fe3O4. Nếu có 4.48 lít khí O2 phản ứng. Hãy tính mFe = ? và mFe3O4 (bằng 2 cách)