Предмет: Алгебра, автор: Rapish

Упростите выражение (a+2b)(2b-a)+(a+3b)^2

jekadva: = 13b² + 6ab

Ответы

Автор ответа: Universalka

(a + 2b)(2b - a) + (a + 3b)² = (2b)² - a² + a² + 6ab + (3b)² = 4b² +6ab + 9b² = 13b² + 6ab

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: Alarich

1. I honestly think it ____ better if we ____ each other for a while. (to be, to see – negative) 2. If you ____ already married, Mr. Clay, I ____ for you. (to be – negative, to wait) 3. Now if only Betty ____ able to come this evening she ____ it. But, of course, she had to choose this evening to go and see her mother.(to be, to do) 4. If he ____ ordinary, I ____ him (to be, to love – negative) 5. And if anything ____ to him, there ____ something in the Press. (to happen, to be) 6. I ____ it a few months ago, Mr. Chapin. (to believe) 7. If I ____ you, I think I ____ very much as you do. (to be, to feel) 8. You first brought your friend into my sister's company, and but for you we ____ never ____ him. (to see) 9. I certainly won't leave you so long as you are in mourning. It ____ most unfriendly. If I ____ in mourning you ____ with me, I suppose. (to be, to be, to stay) 10. He was a power in the College, and ____ in any society; (to be) 11. If you ____ news before morning, ring me up at once. (to have) 12. I like the place. The air suits me. I ____ surprised if I ____ here, (to be – negative, to settle down) 13. There is nothing the Barkers ____ for a few pounds. (to do –negative) 14. Well that wasn't true what she said and, if It ____ that ____ , no business of hers. (to be, to be) 15. "She told me the other day that her heart stopped for five minutes when that horrid nurse was rude to her." "Nonsense! She ____ alive now if her heart ____ for five seconds." (to be – negative, to stop) 16. I think it ____ her so much good to have a short stroll with you in the Park, Dr. Chasuble. (to do) 17. The story I have to tell ____ never ____ if one day I ____ across the street. (to happen, to walk – negative) 18. "She is so wretched," I told him, "that she ____ gladly ____ tomorrow morning if it ____ for the baby." (to die, to be – negative) 19. If I ____ you I ____ abroad again. (to be, to go) 20. "I think, Edward," said Mrs. Dashwood, "you _____ a happier man if you ____ any profession to engage your time and give an interest to your plans and actions. Some inconvenience to your friends, indeed, might result from it: you ____ able to give them so much of your time." (to be, to have, to be – negative) 21. Jago was longing for me to say that he ought to be the next Master. A few years before I ____ yes on the spot. (to say) 22. And if I ____ I was going to meet you, I ____ differently. (to know, to dress) 23. If he ____ here, send him to us at once. (to return) 24. I ____ what I am but for him. (to be – negative) 25. "Why are you talking this rubbish," he said, "and making me talk it too?" "If what you say ____ true, women ____ either poisonous or boring!" (to be, to be) 26. Just think, if I ____ the pictures I ____ a rich woman now. (to buy, to be) 27. Mr. Gresham, this marriage will, at any rate, put an end to your pecuniary embarrassment, unless, indeed, Frank ____ a hard creditor. (to prove) 28. Anyhow, a fire started, and if a young fellow who's working here ____ instantly ____ with an axe, their big storage tank of gasoline ____ in the air and God knows what ____ then. (to set about – negative, to go up, to happen) We all ____ with it. (to go) Honestly, we're all lucky to be alive. If it ____ for this chap, we ____ (to be – negative, to be – negative).

1 год назад

Предмет: Українська мова, автор: LeraP2004

скласти звукові моделі из слів : дощ , кінь.

1 год назад

Предмет: Другие предметы, автор: Викандра

организация подготовки офицерских кадров для Вооруженных Сил РФ

1 год назад

Предмет: Математика, автор: byp

(216-179+4•6):8 Помогите решить пожалуйста

8 лет назад

Предмет: Математика, автор: Ольга50000000005

пожалуйста можете только с ответами и без решений

8 лет назад