Bài 2: Tìm x, y nguyên biết: a. 3x + 27 = 12 b. 2x - 12 = 3x – 17 c. (x +2001) (2x - 2016) = 0 d. e) 2.( 3 – 6x ) + 8 ( x – 5) = - 42 f) 3 – ( x-5)2 = (-6) g) (x +2)( y – 14 ) = -3 h) 2x + xy - 3y = 18 k)2x + xy – 3y = 6 q) (x2 - 3).(x2 – 20) là số nguyên âm l) 4.(-2)3- 3(x-7)=31-(2x+1) m) ( x + 3).( x-2) là số nguyên dương n) ( x+ 1) + ( x+ 3) + …. + (x+ 99) = 0

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EXERCISE I/ Complete the sentences. Use the correct form of the words in the box: any bottle dozen else favorite grams half many much some 1. Is there anything............................. you'd like to buy ? 2. We need............................a kilo of meat. 3. How..........................lemonade you want ? 4. Please give me a...............................eggs. 5. How much is a..................................of milk ? 6. Does he want four hundred..............................of chicken ? 7. I'd like an apple and ...............................rice. 8. How............................bars of soap does your mother want ? 9. Is there................................cheese in the fridge ? 10. My..............................vegetable is beans. II. Make questions with How much or How many. 1. _______________ cooking oil does he need? 2. _______________ eggs do they want? 3. _______________ rice does his mother need? 4. _______________ bar of soap does she want? 5. _______________ toothpaste do they need? 6. _______________ milk does Lan want? 7. _______________ tea does Mr. Kien need? III. Use the correct form of the verbs: 1. These students ___________ some milk. (want) 2. Mai ___________ a glass of orange juice. (like) 3. Ba ___________ breakfast at seven o’clock every morning. (have) 4. what ___________you ___________ for lunch? (have) 5. ___________ you ___________ noodles? (like) 6. ___________ Lan ___________ chicken or beef? (want) 7. How much homework does Nam ___________? (do) 8. I have some oil but I ___________ any flour. ( not have) IV. Rearrange the words to make the sentences: 1. Her sister / needs / of pork/ and10 kilos /of rice / half a kilo / Her sister ...................................................................................... 2. How much / does your mother/ cooking oil / want/? How...................................................................................... 3. Jane / wants / and two kilo / of sugar/ a dozen oranges / Jane ...................................................................................... 4. Can / for me / you/ the store / go to/ ? Can...................................................................................... 5. He/ feels / hungry / some bacon bread / and wants / He............................................................................................. 6. How many / do / apples / your sisters / want? How ...................................................................................... 7. What / does your sister / favorite food/ want/ ? What ...................................................................................... Giúp mik với ạ