Đáp án:
Giải thích các bước giải:
2n+14/n+2=2n+4+10/n+2
=2+ 10/n+2
để p/số tối giản suy ra n+2 khác ước của 10
Vậy n khác -1,0,3,8,-3,-4,-7,-12 thì p/s tối giản
Chúc bạn học tốt ^.^
Fanart 1 trong 2 ông bà Niệm hoặc Nghi :)) Tranh tùy tâm :33 Ưa 2 anh/em này phết đí:))
Bạn ơi, giúp mik vs. Chọn câu trả lời vs giải thích luôn nhaaaaa.
Đặt câu cho phần gạch chân. 1. Linh has milk and eggs for breakfast 2. My father has lunch at home 3. Mai's brother wants a glass of orange juice 4. Miss Thu needs a kilo of tea
Bài 6: Cho 150 gam dung dịch NaOH 4% tác dụng vừa đủ với 100 gam dung dịch MgCl2 a %. a, Tính a b, Tìm khối lượng kết tủa thu được Bài 7: Cho 200 gam dung dịch AgNO3 17 % tác dụng vừa đủ với a g dung dịch NaCl 5,85 % a, Tính a b, Tìm khối lượng kết tủa thu được Bài 8: Hòa tan 20 gam CaCO3 cần dùng m gam dung dịch HCl 14,6 % thu được V(l) khí đktc a, Tìm m, V b, Tìm khối lượng muối thu được sau phản ứng c, Tìm khối lượng dung dịch thu được sau phản ứng d, Tìm nồng độ C% của chất tan trong dung dịch sau phản ứng.
cho mik cấu trúc thì hiện tại đơn nhé
Các pác vẽ tấm poster chúc mừng sinh nhật ạ, người sinh nhật là HẢI phong, Các pác giúp em kí tên là sóc nha
Phân tích thành nhân tử, với x,y không âm
27 mũ 11 và 81 mũ 8 625 mũ 5 và 125 mũ 7 So sánh ạ
vẽ mầm nl:có bác nào lớp 6 khum
TEST I. Choose the word whose underlined part is pronounced differently from the others. 1. a. actor b. painting c. anthem d. gallery 2. a. decide b. exciting c. exhibit d. organise 3. a. educated b. played c. recycled d. changed 4. a. cello b. choose c. kitchen d. concert 5. a. sugar b. closure c. share d. anxious II. Choose the odd one out. 1. a. music b. cello c. guitar d. drums 2. a. actor b. artist c. painting d. singer 3. a. cello b. violin c. saxophone d. guitar 4. a. jazz b. pop c. rock d. anthem 5. a. The Spice Girls b. Gangnam Style c. The Beatles d. ABBA III. Choose the best answer a, b, c, or d to complete the sentence. 1. His Jacket is almost the same colour __________ mine. a. with b. as c. to d. for 2. Water puppetry began __________ the 11th century. a.in b. on c.at d.from 3. The __________ is rather older now; however, his acting ability has never been better. a. composer b. actress c.artist d. actor 4. Janna can’t play the piano, and Carol can’t play it __________. a. either b. too c.neither d. as well 5. Juan and Patricia are not the same height Juan is __________ Patricia. a. as tall as b. not as tall as c. more tall than d. not tall than 6. Saxophones are used mainly for __________ jazz music. a. composing b. taking c.playing d. writing 7. I went to the 3D __________ last weekend. The paintings were excellent! a. movie theater b. concert hall c. opera house d.art museum 8. __________ I’m not a fan of country music, I thoroughly enjoyed his lively performance. a. Although b. Because c.As d. However 9. __________ does a water puppet show take place? ~ In a pool. a. What b. When c.How d. Where 10. Which is the national anthem of Vietnam? a. Tieu Doan 307 b.Chien si Viet Nam c. TienQuanCa d. Tienve Ha Noi IV. Write the correct tense or form of the verbs in brackets. 1. My home town ________________ (change) a lot in the recent years. 2. Please, stop! You ________________(drive) so fast. 3. The paintings ________________(make) on Dzo paper with natural colours. 4. Yesterday I ________________(go) to the centre and ________________(see) an exhibition. 5. As soon as I ________________(finish) painting my room, I’ll paint the kitchen. 6. I ________________(be) to England three times so far. 7. The children ________________ (not be) at home last Sunday. 8. Do you think we ________________ (write) a test tomorrow? 9. Are you interested in ________________(do) community service? 10. Some teenage girls volunteered ________________ (work) at the local hospital. V. Supply the correct form of the words in brackets. 1. Avatar is probably the ______________film I’ve ever seen! (bad) 2. A dancer must throw her heart and soul into every ______________. (perform) 3. I think Men in Black 1 was as ______________asMen in Black 3. (excite) 4. Although John and Andrew look exactly alike, they act quite ______________. (different) 5. Dong Ho paintings are made with ______________colours. (nature)
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến