Предмет: Алгебра, автор: redjj

СРОЧНО
Помогите. Номера 638 и 639. ответ в виде фото, пожалуйста.

Приложения:

Ответы

Автор ответа: АлексейПеткун
0

а) при у=-1

б) при y=1

в) при y=0

г) при у= 1/2

АлексейПеткун: 638:
АлексейПеткун: y^4+2y^2-5y+1



у=-1: 1+2*1+5+1 = 1+2+5+1 = 9

у=1: 1+2-5+1 = -1

у=0: 0+0-0+1=1

у=1/2: 1/16 + 1/2 -5/2 + 1 = (1+8-40+16)/16 = -15/16 = -0,9375
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: bano20292
Срочно !
Match the words with their translations.

a secondary school a) усвідомлювати

senior b) старший

to realize c) можливість

a boarding school d) середня школа

to provide e) надавати

an opportunity f) школа-інтернат

Complete the sentences with the words given below.

Equal, nursery, infant school, leave school, junior school, secondary, primary school


In Britain parents can send their children to a _______ school between the ages of about three or five, but it is optional. The children spend a few hours at nursery school each day. Between five and eleven, children go to _______. Primary schools are usually divided into an _______ (for children aged five to seven) and a _______ (for children aged seven to eleven). When they are 11 years old, children go to _______ school and take their GCSE exams at the age of 16. They can _______ when they are 16, but if they want to stay in education, they study for a further two years. Many people in Britain are against private schools and they stand for _______ opportunities for secondary school children.


Put the verbs in brackets into the correct tense. Add comma where necessary.

Simon … (to go) to London next week if he … (to get) a cheap flight. 2. If they … (not to study) harder they … (not to pass) the exam. 3. If you … (to send) this letter now she … (to receive) it tomorrow. 4. If Bill … (to do) lots of exercise he … (to be) fit and healthy. 5. Mike … (to be able) to go on holiday if he … (to save) enough money. 6. … you … (to give) me a call if you … (to have) time tomorrow?

It is much spoken about the reforming of the Ukrainian educational system. How do you think should we do it or not? Why? What would you like to change?
5 лет назад
Предмет: Физика, автор: gshsvheudhhshsh
1) знайдіть швидкість тіла, якщо за 20с пройшло 400м

1. 20м/с
2. 200м/с
3. 8000м/с​
5 лет назад
Предмет: География, автор: bushelichv4
Перетворіть числовий масштаб у лінійний: 1) 1:1 000; 2) 1:250 000; 3) 1:7 000 000
 срочно ​
5 лет назад
Предмет: Обществознание, автор: SWINSTER
Какую роль общество играет в жизни людей
9 лет назад
Предмет: Математика, автор: КоТеЙкА20041
три коробки мармелада весит 1 килограмм 200 грамм сколько весит 27 таких коробок
9 лет назад