Предмет: Математика, автор: informatik147

Объясните ,пожалуйста, как решать квадратные неравенства с отрицательным дискрименантом

Ответы

Автор ответа: harbet333

если квадратное неравенство получается с отрицательным дискриминантом то либо оно всегда больше ноля , либо всегда меньше ноля , подставив любое значение вместо x ты можешь это выяснить, также если неравенсто находится под корнем чётной степени и получается отрицательным то выражение не имеет смысла, так как корень чётной степени только положительный , если чтото не понял пиши в коменты объясню

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Алгебра, автор: willthompson

Розв'яжіть дробове раціональне рівняння

7 лет назад

Предмет: Английский язык, автор: Araikaaas

Task 1. Passive voice 1.The roads (cover) with the snow *

A . is covered

B.are covered

C.will be coverd

2.The Pyramids (build) in Egypt. *

A.Are build

B.were build

C.was build

3.This coat (buy) four years ago *

A.was bought

B.is bought

C.will be bought

4.The stadium (open) next month *

A.was opened

B.is opened

C.Will be opened

Task 2.Reported speech 5. Jack said: “ I am working hard. *

A.Jack said (that) he was working hard

B.Jack said (that) he works hard

.C.Jack said (that) he worked hard

5.Fred said: “I have invented a new computer program”. *

A.Fred said (that) he has invented a new computer program.

B.Fred said (that) he had invented a new computer program.

C.Fred said (that) he invented a new computer program.

6.The policeman said: “Keep the silence, please.” *

A.The policeman asked keeps the silence.

B.The policeman asked keep the silence.

C.The policeman asked to keep the silence.

7.“Are you French or Italian?” *

A.She wanted to know if he is French or Italian.

B.She wanted to know if he was French or Italian.

C.She wanted to know if he were French or Italian.

Это обязательный вопрос.

8.The dentist told me: “Don’t eat nuts anymore *

A.The dentist asked me not to eat nuts anymore.

B.The dentist asked me don't to eat nuts anymore

C.The dentist asked me doesn' t to eat nuts anymore

Task 3 Second conditional 9.She … (not mind) if you … (borrow) her car. *

A.wouldn’t mind – borrow

B.didn’t mind – borrowed

C.wouldn’t mind – borrowed

10.If you … (move) to another city, I … (phone) you every day. *

A.moved – will phone

B.moved – would phone

C.move – would phone

11.First conditional If you … (not help) me, I … (not pass) the exam tomorrow. *

A.doesn’t help – won’t pass

B.don’t help – won’t pass

C.don’t help – wouldn’t pass

12.f you … (lend) me the money, I … (pay) you back next month *

A.lends – will pay

B.lend – won't pay

C.lend – will pay

13.If my sister … (travel) to Japan, she … (buy) a kimono for me. *

A.travel – will buy

B.travels – will buy

C.travels – would buy

Это обязательный вопрос.

14.Third conditional If I _____________ (not use) so much gas, I _____________ (not have) such a big gas bill. *

A.Hadn’t used / wouldn’t have had;

B.Hadn’t use / wouldn’t have had;

C.Hadn’t used / wouldn’t had had;

15.If I … (save) more money, I … (go) to Australia. *

A.had saved – would have gone

B.have saved – would have gone

C.had saved – will have gone

16.I … (take) you to the airport if I … (have) a car. *

A.would had taken – had had

B.would have take – had had

C.would have taken – had had

17._____ does Molly do after dinner? – She brushes her teeth. *

A.What

B.Who

C.When

D.Where

18.____ does Sam have lunch? – At school. *

A.What

B.Where

C.Who

D.When

19.Your parents are going to Moscow, ______________? *

A.are they

B.are you

C.aren't they

D.aren't parents

20. It’s the rainy season in Moscow now, ______________? *

A.is it

B.isn't it

C.is rainy

D.are they

7 лет назад

Предмет: Математика, автор: reryegevd

6.Измерь угол. Дам 10 баллов. Задание 5 не надо делать!

7 лет назад

Предмет: Математика, автор: krivetkabrb

а) (9-2 3/11) + (2+1 9/11)=?
б) 28 2/21 -( 14 17/21 + 11 8/21) =?

10 лет назад

Предмет: Литература, автор: ПаФиГиСтКа05

Какая речь была у Васи из рассказа в дурном обществе помогите ну например речь была мягкая ну там жёсткая

10 лет назад