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emtendat1234
2 năm trước
Bài 1: Khai triển các HĐT sau : 1) (x+2y )³ 2) (2x-1) ³ 3) (2x-1/2) ³ 4) (1-3x)³ 5) ( 3x-2y)³ 6) ( x+1/3) ² Bài 2:Viết các biểu thức sau dưới một dạng hay một tổng 1) x ³ + 3x ² + 3x +1 2) 27y ³ - 9y ² +y - 1/27 3) -3x ² + x ³ - 1 4) 8x mũ 6 + 12x mũ 4 y + 6x mũ 2 y mũ 2 + y mũ 3 Mọi người giúp em với e cần gấp nhé
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Ex 9. Read the text carefully, then decide if the statements are true (T) or false (F). TEEN LIFE IN THE FUTURE What will life for teenagers be like in the year 2030? For the start, computers will be everywhere and they will do everything for us. We won’t have alarm clocks in the future. A picture in your bedroom will become a computer screen and it’ll wake you up and say hello. You’ll walk into the kitchen and the toaster and coffee machine will recognise your voice and automatically make you your breakfast. Your computer will remind you to do your homework. You won’t need a backpack, because all your text books will be digital and they’ll be on one e-reader. In your classroom, the top of your desk will become a computer screen. You’ll touch the screen to connect to the Internet, but you won’t be able to send or receive personal messages. You won’t have to go to the shopping centre to buy your clothes. You’ll buy a sweater online and it’ll be right size because a computer will scan your body. Everyone will have a touch screen phone with GPS, so you’ll never get lost. The bad news is that your parents will use the GPS to know exactly where you are! 1. Life in the future will be better and more convenient. 2. A robot will make your breakfast every morning. 3. Students won’t have to do their homework because their computer will do it. 4. There will be no more textbooks in classes. 5. At a clothes shop, a computer will scan your body for measurements. 6. Students will be able to send and receive their personal messages in the classroom. 7. GPS will be used to find out where you are. Ex 10. Complete the second sentence so that it has the same meaning to the first one. Use the word in brackets. 1. What are your plans for the weekend? (do) What 2. Peter knew how to skate when he was 12. (could) Peter 3. The last time they visited Europe was two years ago. (not) They 4. Robots are not as intelligent as humans. (than) Humans 5. How long have you learned English? (start) When

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