1) × ² ( 5x-4) 2) -2x ² ( 6-10 x )
III/. Write the sentences with the same meaning to the first ones. Use words given. 1. Many people speak English in the world. => English.............................................................................. 2. People get more diseases. The water is contaminated. => If....................................................................................... 3. David went home before we arrived. => After................................................................................. 4. This is the first time I have had such a delicious meal. => I have never......................................................................
Giải giùm mình nha , mik đang cần gấp nè
Tìm min hoặc max : G=1-x^2+xy-y^2 H=2x^2+y^2-2xy-2x-9
Bằng cách nêu dấu hiệu đặc trưng , hãy viết tập hợp A các số tự nhiên nhỏ hơn 10
Giải giúp mik với ạ có kèm giải thích nx thì càng tốt ạ
1. Yesterday, Mai and her parents (go) ………went……………………………………………. shopping. 2. I would like (tell) ………to tell…………………………………………………you about my family. 3You are sick, so you should (go)……………………………………………………. to the doctor. 5. When Lan’s father (be) …was …………………… young. He (drink) ……………used to drink………………………… a lot of wine. 6. Her family always (watch) ……watches………………………. TV in the evening 7. Thirty years ago, very few people (have)…..........had........................................TV sets. 9. We went to the doctor because we (be) …………………………………………sick. 10. What would you like (watch) …………………………………………………………………………...?
101. Ben and his brother are so alike that I sometimes get them mixed up. (such) Ben bears _________________________________________________________________________________ 102. They have converted the old station into a smart restaurant. (transformed) The old station ___________________________________________________________________________ 103. I didn‟t know what to expect at the first rehearsal as I hadn‟t read the script. (having) Not _______________________________________________________________________________________ 104. Amy didn‟t realise how noisy her neighbourhood was until she moved away. (moving) Only _____________________________________________________________________________________ 105. A list of recommendations is still being prepared by the committee. (drawing) The committee __________________________________________________________________________ 106. Lily promised that she is going to help me set up the equipment. (word) Lily ________________________________________________________________________________________ 107. No matter what happens, Jane will never forgive Mark for what he did. (ever) Under _____________________________________________________________________________________ 108. Trudy is such an optimist - even in the most difficult situations. (side) Trudy manages to ______________________________________________________________________ 109. Harry is the spitting image of his mother! (resemblance) Harry ___________________________________________________________________________________ 110. I once saw Madonna - just for a second - as she got into her limo. (glimpse) I once ___________________________________________________________________________________
Bài 5: Cho tam giác nhọn ABC(AB<AC) đường cao AH. Gọi M,P,Q lần lượt là trung điểm của BC,Ca,AB. Cmr: a) PQ là đường trung trực của AH b) Tứ Giác MPQH là hình thang cân
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