Giải thích các bước giải:
`(x^2+2)(x^2+3)(x^2+4)(x^2+5)-24`
`=[(x^2+2)(x^2+5)].[(x^2+3)(x^2+4)]-24`
`=(x^4+7x^2+10)(x^4+7x^2+12)-24`
Đặt `t=x^4+7x^2+10`
`=>(x^4+7x^2+10)(x^4+7x^2+12)-24`
`=t(t+2)-24`
`=t^2+2t-24`
`=(t^2+6t)-(4t+24)`
`=t(t+6)-4(t+6)`
`=(t-4)(t+6)`
`=(x^4+7x^2+10-4)(x^4+7x^2+10+6)`
`=(x^4+7x^2+6)(x^4+7x^2+16)`
`=(x^2+1)(x^2+6)(x^4+7x^2+16)`
Đáp án:
`[(x^2+2)(x^2+5)][(x^2+3)(x^2+4)]-24`
`=(x^4+7x^2+10)(x^2+7x+12)-24`
`=(x^4+7x^2+11)^2-1-24`
`=(x^4+7x^2+11)^2-25`
`=(x^4+7x^1+6)(x^4+7x^2+16)`
@kinh0908
:^ Bắt đầu rùi nà mấy bác ưi Dân nhạc họa vô đây vẽ nak ! Vẽ linh vật tượng trưng cho Hỏi Đáp =w= Tô hay ko tô thì tùy =) Nhớ đọc kĩ để kẻo sai nhó ! 🤩 Hóng mn ❤❤
Vẽ chibi khóc Toi khi nghe cuộc thi vẽ linh vật phải viết 1 đoạn văn trình bày lí do kiểu:
mn ơi vẽ aime zẻ nha,bt sao ko hôm nay tui gặp thắng tê tê ở ngoài đời thật á,thắng tee tê ik cùng thanh lương nx chứ
Cho đường thẳng a song song với b , c vuông góc với a chứng minh b vuông góc với c
Giải thích cho mình với 1......hard work is good for your health A.little B.few C.a little D.a few 2.during the day,it is ......than at night A.much hot B.more hot C.the most hot D.much hotter
Vẽ Anime linh vật các bn ơi >><< Tô full đầy đủ !!!!!! Nhờ các bn vẽ để mk lấy thêm ít động lực
1. My father waters this flower every morning. 2. John invited Fiona to his birthday party last night. 3. Her mother is preparing the dinner in the kitchen. 4. We should clean our teeth twice a day. 5. Our teachers have explained the English grammar. 6. Some drunk drivers caused the accident in this city. 7. Tom will visit his parents next month. 8. The manager didn’t phone the secretary this morning. 9. Did Mary buy this beautiful dress? 10. I won’t hang these old pictures in the living room. 11. The German didn’t build this factory during the Second World War. 12. The Greens are going to paint this house and these cars for Christmas Day. 13. Ann had fed the cats before she went to the cinema. 14. The students have discussed the pollution problems since last week. 15. Have the thieves stolen the most valuable painting in the national museum? 16. Some people will interview the new president on TV. 17. How many languages do they speak in Canada? 18. Are you going to repair those shoes? 19. He has broken his nose in a football match. 20. Have you finished the above sentences? 21. When will you do the work? 22. How are you going to deal with this problem? 23. How do you spend this amount of money? 24. I wonder whether the board of directors will choose Susan or Jane for the position. 25. How did the police find the lost man? pasive voice
I.Complete each of the following sentences with the correct form of the word from the box biology support willing mischievous obey confident care act solve responsible 1. If you continue to………………….the rules, you will be punished. 2. Spoiled children are often up to…………………. 3. The more he fails, the more he loses ........... in his abilities. 4. She is a research .......... for a pharmaceutical company. 5. She was unable, or………………….to give me further details. 6. Although he is nearly 80, he is still very…………………. 7. We are totally………………….of this idea. 8. She is a very………………….woman. She is always helpful and sympathetic toward other people. 9. He feels a strong sense of………………….towards his parents. 10. They were seeking an ultimate………………….to the city's traffic problem.
Giúp mk bài 7 vs ạ! Hứa vote 5 sao nha!
Giúp mk bài 4 vs ạ! hứa vote 5 sao nha
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