Предмет: Алгебра, автор: taskinilyailya2000

решить уравнение х4+2х2-8=0 распишите все уравнение подробнее

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Автор ответа: kadievam93

2

х4+2х2-8=0
х3(х+2х2-8=0
х3=0 2х2-х-8=0 дальше дискриминант решаем

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Предмет: Английский язык, автор: 232306

Помогите пожалуйста!!!
Use each modal verb (can, may, must, need, have to) in the correct form twice:
1. You __ knock at the door. I have got the key.
2. You __ see the film. It is really interesting.
3. - __ I come in? - Please, do.
4. When I was a child I __ read and write.
5. The buses were all full. I __ go on foot.
6. Students __ never use dictionaries while doing the test.
7. I I have lost the keys. I __ enter my flat.
8. You __ put on a coat. It is going to be warm.
9. When her parents were away, she __ cook all her meals herself.
10. - __ I come in? - I'm afraid not.

1 год назад

Предмет: Английский язык, автор: nikputen1

Question 1
Баллов: 1
He says that he … to the tape.
Выберите один ответ.
listen
will listen
will be listened
would listen
Question 2
Баллов: 1
They … to take part in the competition.
Выберите один ответ.
had to be
must be
had
should
Question 3
Баллов: 1
… children are at home.
Выберите один ответ.
them
their
ours
they
Question 4
Баллов: 1
Could I have … salt?
Выберите один ответ.
a
an
any
some
Question 5
Баллов: 1
Where ... you going when I met you last night?
Выберите один ответ.
did
are
were
will
Question 6
Баллов: 1
They are busy with … lessons.
Выберите один ответ.
she
him
their
its
Question 7
Баллов: 1
They will tell us about the trip … .
Выберите один ответ.
themselves
theirselves
them
ourselves
Question 8
Баллов: 1
… books are thin.
Выберите один ответ.
these
that
this
thus
Question 9
Баллов: 1
It ... to rain soon.
Выберите один ответ.
going
is going
is being
will
Question 10
Баллов: 1
The children were playing in the garden while we ... TV.
Выберите один ответ.
were watching
watch
were watched
have watched
Question 11
Баллов: 1
What is … father?
Выберите один ответ.
me
his
hers
them
Question 12
Баллов: 1
… project is the best in our group.
Выберите один ответ.
she
its
hers
her
Question 13
Баллов: 1
.... it still raining?-Yes, it is.
Выберите один ответ.
are
will
does
is
Question 14
Баллов: 1
I am sorry. I am late.... I come in?
Выберите один ответ.
need
may
can
must
Question 15
Баллов: 1
I ... walk, there is a bus going there.
Выберите один ответ.
can't
may be
mustn't
needn't
Question 16
Баллов: 1
We have ... bread, please, go and buy some.
Выберите один ответ.
many
little
few
much
Question 17
Баллов: 1
Who ... you my new phone number?
Выберите один ответ.
have given
gave
give
gives
Question 18
Баллов: 1
I … to help you.
Выберите один ответ.
shan't be allow
can
shan't have
shan't be able
Question 19
Баллов: 1
When ... you buy the new TV set?
Выберите один ответ.
are
have
did
were
Question 20
Баллов: 1
It was … darker when we saw her.
Выберите один ответ.
get
be getting
got
getting
Question 21
Баллов: 1
If you think ..., you’ll give me the right answer.
Выберите один ответ.
a little
little
few
less
Question 22
Баллов: 1
I picked up … interesting knowledge on that course.
Выберите один ответ.
some
many
a lot
a few
Question 23
Баллов: 1
He ... at the theatre yesterday.
Выберите один ответ.
was
will be
were
is
Question 24
Баллов: 1
You … bring me this book as soon as possible, I need it.
Выберите один ответ.
are
have
may
must
Question 25
Баллов: 1
Peter is fond of reading. Give these books to ....
Выберите один ответ.
him
he
his
her
Question 26
Баллов: 1
Jim is going to London tomorrow because his uncle .. to see him.
Выберите один ответ.
want
had wanted
wants
is wanting
Question 27
Баллов: 1
The weather is getting worse. It ... rain.
Выберите один ответ.
may
can
must
need
Question 28
Баллов: 1
He gave me … roses.
Выберите один ответ.
a few
a little
a lot
much
Question 29
Баллов: 1
He … go skiing.
Выберите один ответ.
will be able to
will have
will do
will allow
Question 30
Баллов: 1
He will go to the theatre if he … free to-night.
Выберите один ответ.
was
is
has been
will be

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