Đáp án+Giải thích các bước giải:
`(x+2)/(x^3+1)`
`=(x+2)/((x+1)(x^2-x+1))`
`(4-x)/(x^2+2x+1)`
`=(4-x)/(x+1)^2`
`=>` Mẫu chung:`(x+1)^2(x^2-x+1)`
`=>(x+2)/((x+1)(x^2-x+1))=((x+2)(x+1))/((x+1)^2(x^2-x+1))=(x^2+3x+2)/((x+1)^2(x^2-x+1))`
`(4-x)/(x+1)^2=((4-x)(x^2+x+1))/((x+1)^2(x^2-x+1))=(4x^2+4x+4-x^3-x^2-x)/((x+1)^2(x^2-x+1))=(-x^3+3x^2+3x+4)/((x+1)^2(x^2-x+1))`
`(x+2)/(x^3 + 1) `
` = ((x+2)(x+1))/( (x+1)^2 (x^2 -x+1))`
`= (x^2+ x + 2x +2)/( (x+1)^2 (x^2 - x+1))`
`= (x^2+ 3x+2)/((x+1)^2 (x^2 - x+1))`
``
`(4-x)/(x^2 + 2x+1)`
` = ((4-x)(x^2 - x +1))/((x+1)^2 (x^2 - x+1))`
` = (4x^2 -4x + 4 - x^3 + x^2 - x )/((x+1)^2 (x^2 - x+1))`
`= ( 5x^2 - x^3 - 5x + 4)/((x+1)^2 (x^2 - x+1))`
cac ban lam giup minh nha minh het diem roi nen chir cho 10d dc thui MONG CAC BN THONG CAM
giúp mk với nha các pạnnnnnn!!!
Giúp zới ẹee, đc thì vt ra giấy nhó
xin các vị su huynh cao tay giúp sư đệ giải cái bài toán đố này với @@
I. Underline the Relative clauses and write Defining or Non-difining clauses. Gạch chân mệnh đề quan hệ. Xác định loại mệnh đề quan hệ 1. We lit a fire which soon dried out clothes. 2. The report which should have taken an hour and a half, took three hours. 3. The children who I was looking after were terribly spoilt. 4. She thanked him for the kind help that she received. 5. There wasn’t any directory in the telephone box from which I was phoning. 6. The man who was driving us didn’t know the way. 7. The Smiths whose house was destroyed in the explosion, were given rooms in the hotel. 8. The car which we hired from the airport broke down on the road. 9. My boss who I really wanted to see, was too busy to meet anyone. 10. Mr. and Mrs. Jones who were out playing cards, knew nothing of the burglary.
Giúp với ạ em cần gấp lắm ạ 🥺🥺❤️ Hứa 5 sao Giúp đi ạ trước 5h có ạ
xy +3/5 x2y2 – 1/3xy – 2020 tại x = 3, y = 5.
be hold have decide sleep stay cost 1. It was freezing outside, so I ___________ on my coat. 2. My mother was very busy yesterday, so I ___________ her. 3. Yesterday was Mary’s birthday but she ___________ a party. 4. We were exhausted, so we ___________ to leave the party early. 5. The bed was very uncomfortable. Tim ___________ well. 6. The musical wasn’t very good. I ___________ it much. 7. The restaurant wasn’t very expensive. It ___________ much to have dinner there. 8. I had to look after my little sister yesterday, so I ___________ time to call you. 9. It ___________ hard to lift the boxes. They weren’t very heavy. 10. It was raining heavily, so I ___________ in. 1. (+) I have finished my homework. (-) ________________________________________________________________. (?) ________________________________________________________________? 2. (+) ________________________________________________________________. (-) My uncle hasn’t been to Singapore before. (?) ________________________________________________________________? 3. (+) ________________________________________________________________. (-) ________________________________________________________________. (?) Have they found their keys? 4. (+) Jim has just played video games with his brother. (-) ________________________________________________________________. (?) ________________________________________________________________? 5. (+) ________________________________________________________________. (-) My grandmother hasn’t visited me since November. (?) ________________________________________________________________? 6. (+) ________________________________________________________________. (-) ________________________________________________________________. (?) Has your sister studied Medicine for 2 years? 7. (+) It has been long since our last encounter. (-) ________________________________________________________________. (?) ________________________________________________________________? 8. (+) ________________________________________________________________. (-) We haven’t graduated yet. (?) ________________________________________________________________?
Cách tắt thông báo cho tin nhắn tới trong ứng dụng microsoft team
Giúp em vs ạ em cảm ơn nhs Xin mn đấy😿 Cứu emm
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