Предмет: Алгебра, автор: RaitoArt

Срочно!
12/x=x-2
Помогите пожалуйста

Yasya1304: 12/X=x-2 12:x=x-2 12:2=x-x 6=x
PerfectM1nd: с головой все норм?
PerfectM1nd: к общему знаменателю не привел, не вычислил...это че ты щас написал?

Ответы

Автор ответа: Аноним
1
12/x=x-2 \\ 12=x^2-2x \\ x^2-2x-12=0 \\ D=4+48=52 \\ x_1= \frac{2-2 \sqrt{13} }{2} (:2)=1- \sqrt{13} \\ x_2=1+ \sqrt{13}
Автор ответа: PerfectM1nd
0

вроде так.................
Приложения:
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Химия, автор: nuradaun
хахаахахахахахаххаххахахахахахахахахахахах
1 год назад
Предмет: Информатика, автор: ddiliyaa
напишите программу, которая по заданному индексу определяет к какому региону относится автомобиль​
1 год назад
Предмет: История, автор: zhuldyz2012
Задание 3. Заполните таблицу. Определите значение прикладного искусства уйсунов и кангюев. Напишите сходства и особенности по каждому виду прикладного искусства древних племен. Обработка шерсти. Ткачество Металлообработка, изделия из металла Ювелирное искусство Сходства в развитии прикладного искусства Особенности прикладного искусства уйсуней Особенности прикладного искусства кангюев​
1 год назад
Предмет: Английский язык, автор: Winkonn
Задание за 4 класс
Как сказал учитель, нужно понять, что за действия выполняют люди и написать их действия во второй форме глагола.
7 лет назад
Предмет: Английский язык, автор: ovoutlalala
Тест помогите!
1. If Jane... English thoroughly many years ago, ahe... the scientifie terminology so difficult to understand. a) had atudied, would have found: b) atudied, would not find: e) had studied, would not have found: d ) was studying. doesn't find.

2. We wish today... su ny so that we... the day in the coun- try or go to the beach. a) was, could spend: b) is, ean spend; e) were, could apend: d) was, can spend.

3. I wish he... Iast Friday but his flight was cancelled be- cause of bad weather. Ir he ... the next day I... him by car. a) arrived, called, would bring: b) had arrived, had ealled, would have brought: e) had arrived, called, would, have brought; d) arrived, calls, will bring.

4. Many scientists insist that if people .. to pollute the World Ocean with industrial wastes there.. n o drinking wa- ter and the humanity... to be under mortal threat. a) continue, will be, will turn out;b) will continue, will be. will turn out: e) continued, would be, would turn out; d) con tinued, would have been, would have turned out.

5. If I . you, I ... him to take part in this meeting. He knows a lot about the firm and can help to find the decision. a) were, will convince: b) was, will convince; e) were, would have covinced: d) were. would convince.

6. Michael thoroughly characteristics of the car. won't get his driving license the unless technical he traffie regulations and a) studied; b) wil atudy;e) have studied: d) studies.

7. If the driver .. more careful, Joe... into the car accident last week. a) was, would not; b) had been, would not have got: e) has been, would not have got; d) was, wil not.
8. I'll leave you the keys from my house in case my husband earlier. a) arrives; b) arriced; e) will arrive; d) would arrive.

9. Ir the defendant. to hire a more experienced barrister, may be the verdiet.. so severe. a) was able, would not be; b) is able, will not be; e) was, would not have been; d) had been, would not be.

10. I wish our family. in a big eity, not in a small village where it is impossible to find an interesting Job. If I. in a city like New York I... a journalist. a) would live, will live, will become: b) would live, lived, would become; e) lived, live, will become: d) llved, live, will be tion. a) considers, would have; b) considered, would have; e) had considered, would have; d) has considered, will have.

11.If we knew that we. for 6 hours we . for the journey. a) will be walking, would prepare; b) will walk, will prepare; e) walk, aill prepare; d) would walk, would have prepared.

12. If we. the warning earlier, we. that contract and our firm .. such significant losses. a) recelved, would not sign, wll not incur: b) receive, will not sign, Incur:e) had recelved, would not have signed, would not incur; d) recelves, sign, incures.

13. After a series of murders in the city people were told to call the police providing they .. something suspicious. a) notice; b) noticed: e) will notice; d) had noticed.

14. Everybody wishes she . to the party yesterday but she had to stay at home and look after her younger sister. a) came; b) has come; e) comen; d) had come.

15. If the Second World War ...a lot of works of art. and a great number of people... a) had not broken out, would not have been destroyed, would not have died; b) did not break out, would not be destroyed. would not die; e) had not broken out, would not be destroyed. rould not die; d) did not break out, was not destroyed, did not die.

16. Today women are so addieted to the fashion that they put up with any discomfort providing they ... right. a) will look: b) looked; e) look; d ) had looked.

17. If the judge. our suit by Thursday, we.. an opportu- nity to finish all our affairs within two days and have a vaca- tion. a) considers, would have; b) considered, would have; e) had considered, would have; d) has considered, will have.

18. "Why do you think that if you..I.. about our quarrel? I wish I.. but it la impossible." a) apologized, uwill forget, could; b) apologize, wil forget, can; e) apologized, would forget, could; d) had apologized, would forget, eould.

19. We bought an extra can of petrol in case we .. across a petrol station some 100-200 km away. a) cannot come;: b) could not have come; e) could not com- ing: d) could not come.

20. If I. that my presence at the previous meeting was necessary, I. as soon as possible. a) knew, would arrive; b) had known, would have arrived; c) knew, would arrive; d) had known, would arrive. come. ​
7 лет назад