Đáp án:
Giải thích các bước giải:
`A+B = 3xy^2 + 3xy^3 + 3xy^7 + 3xy^3`
`= 3xy^2 + (3xy^3 +3xy^3) + 3xy^7 = 3xy^2 +6xy^3 +3xy^7`
$#Dino$
`A+B=3xy²+3xy³+3xy^7+3xy³`
`=3xy^7+3xy^2+6xy³`
Fill in each gap with ONE suitable word to complete the passage. THE ADVENTURES OF SUPERLAN- The Rescue This is Lan. She is a student. Lan is reading when the phone (1)________. “Three boys are on the mountain. They are in (2)________. One boy is hurt. This is a job for Superlan.” Superlan is tall. She is strong. She is fast. She can fly. Superlan is looking (3)________the boys. She flies over the mountain. She sees the boys on the mountain. Superlan lands near the boys. - “It is Superlan!” - “What is the (4)_______?” - “My leg hurts. I can’t walk.” Superlan is carrying the boy. She is flying to the (5)_______. - “What is wrong, Superlan?” - “His leg is (6)_________. - I must go now. Two boys are on the mountain.” The boys see Superlan. They wave to her. One boy slips and falls. Superlan is fast. She dives and catches the boy. Superlan is strong. She carries the two boys (7)________the hospital. Now all the boys are (8)________hospital. Superlan goes home. She takes (9)________her uniform. Now she is Lan. It is evening and Lan is watching television. Superlan is famous. Why is she famous? Because she is fast. Because she is strong. Why is she fast and strong? Because she eats healthy food. She doesn’t eat (10)_________food.
Qua thấu kính hội tụ vật AB vuông góc với trục chính của thấu kính,A nằm trên trục chính cho ảnh A'B'=1/3AB. Ảnh này cách F' một đoạn A'F'=10cm a: Vẽ ảnh của vật b; dựa vào hình vẽ tính d,d',f'
Complete the paragraph below, using the correct form of the words in brackets. VIET NAM Vietnam is in the South- East Asia. It has (1) ………….. of beautiful mountains, rivers and beaches. (2) ………….. are two long (3) ……………. in Vietnam: the Red River in the north and the Mekong River in the (4) ………….. The Mekong River is the (5) ……………. river in the South- East Asia and of course it is longer (6) …………. the Red River. The Mekong River starts in Tibet and (7)………….to the Bien Dong. Phanxipang is (8) ………… highest mountain in Vietnam. It’s 3,143 meters (9) …………. Vietnam also (10) …….….. many nice beaches such as Sam Son, Do Son, Nha Trang, Vung Tau.
Hãy viết mở bài và kết bài cho bài " Đi một ngày đàng, học một sàng khôn. Mở bài gián tiếp và không chép mạng ah
Hàng loạt vở kịch như "Tay người đàn bà","Giác ngộ","Bên kia sông Đuống"...ra đời đã sưởi ấm cho ánh đèn sân khấu ở khắp mọi miền đất nước .Xác định chủ ngữ cốt, vị ngữ cốt. Và xác định chủ ngữ nhỏ,vị ngữ nhỏ
In end of July and early August 2015, there was a major flood in the North of Viet Nam. This is a natural disaster caused great damage, delayed production, affected many industries in the North of Vietnam, especially the coal industry. Typhoon in the north as of August 6th have damaged 3 thousand homes, 38 people died or missed and engulfed many large coal mines, raised concerns about the risk of serious environmental pollution to communities, local and for Ha Long Bay. According to the official website of the Government, the material damage is estimated at 2 trillion VND, of which about half is the loss of Coal and Minerals Industry Corporation of Vietnam. After the flood passed, to help people in need, the local government provided food for the injured and helped them cleared up debris. Chữa hộ mình bài này nha thanks
Trả lời hộ em :)))) ...................
viết đoạn văn diễn dịch khoản 10 câu về lòng yêu nước thương dân trong “chiếu dời đô” sử dụng 1 câu nghi vấn dùng để khẳng định . Mọi người làm ơn giúp em vs ạ ! Sáng mai em phải nộp rồi ạ ! Em cảm ơn 🙏🙏
Supply the correct form of verbs 1. Look! The plane ( fly)..............towards the airport. It ( land)...................... 2. What about ( go) ............... to the cafeteria? 3. Would you like ( come)............ to my house for dinner tonight? 4. Mai often ( not write).............to her old friends in Hue. 5. My mother wants me ( buy) .........two kilos of potatoes. 6. How many floors your school ( have).................?
This passage contains ten errors. Dear Peter, I am a student in grade six in a school in Hanoi 0._________at ______ city and this year I am twelve year old. I live in 1._________________ a house with me parents and my brother and my 2._________________ sister in a country. It is very beautiful and quiet. 3._________________ I ride at school with my close friends every morning. 4._________________ I like listening to music and play soccer. On the 5._________________ weekends I often go out with his friends. Sometimes 6._________________ we go to the cinema (about one a week), and 7.__________________ sometimes we just go for a walk. My favorite subject 8.__________________ at school are Math, English and Literature, and I don’t like 9.__________________ Geography. What about you? Please write with me soon 10.__________________
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến