Ответ по предмету Алгебра: является ли равенство (k+1)^2 (k-1)^2=(k^2+1)^2+4k^2 тождеством? Докажи. после преобразований в левой части получится выражение : -3k+1 k^4-2k^2+1 k^4-1 k^4-4k^2+1 или другой ответ?

Предмет: Английский язык, автор: Leshkaleshka

Помогите пожалуйста перевести текст, только не при помощи переводчика, очень надо, заранее спасибо)
When the
American Minister, Mr Hiram B Otis, bought the large old house called
Canterville Chase, everyone told him that he was very foolish. Even Lord
Canterville, who wanted to sell the house, tried to tell Mr Otis that it was a
mistake to buy it.

I must be
honest with you, Mr Otis, said Lord Canterville, it visits anyone who lives or
stays her. My poor old aunt, the Dowager Duchess of Bolton, once felt two hands
on her shoulders as the dressed for dinner. The hands were cold and hard, like
the hands of a skeleton. My poor aunt was very frightened. She became ill, and
she never really got better. That is why my family and I do not like to stay
here any more.

Did anyone
else see the ghost? Asked Mr Otis.

The
Reverend Augustus Dampier also saw it, said Lord Canterville. Dampier went to
Cambridge University you know. He s very clever and not the kind of man who
imagines things.

No, of
course not said Mr Otis.

After the
terrible thing that happened to my dear aunt most of our servants left the
house and didn’t want to come back here to work. My poor wife Lady Canterville
could not sleep at night. She was frightened and of course the strange noises
that we hear in the halls and in the library make us even more afraid.

Im not
afraid said Mr Otis. I want to take the house and the ghost. I come from a
modern country where we have everything that money can buy. There is nothing in
Europe that we don’t have in America. If there were ghosts we would have some
too there are no ghosts in America you known!

Lord
Canterville smiled.

Im afraid
that the ghost is real he said. It is more than three hundred years old for
members of my family first saw it in 1584. Shortly before any member of my
family dies the ghost appears.

Mr Otis laughed.

Im sorry he
said but I don’t believe in ghosts. There is no such thing!

Well smiled
Lord Canterville I hope you are happy it the house but you must remember that I
warned you and you did not listen to me.

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является ли равенство (k+1)^2 (k-1)^2=(k^2+1)^2+4k^2 тождеством? Докажи. после преобразований в левой части получится выражение :-3k+1k^4-2k^2+1k^4-1k^4-4k^2+1или другой ответ? ​

Ответы

является ли равенство (k+1)^2 (k-1)^2=(k^2+1)^2+4k^2 тождеством? Докажи.
после преобразований в левой части получится выражение :
-3k+1
k^4-2k^2+1
k^4-1
k^4-4k^2+1
или другой ответ?