Предмет: Алгебра, автор: Fsgvx5745

Помогите пожалуйста вывести формулу куба суммы ​

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Автор ответа: psvitlanadz
1

Ответ:

(а+б)³=а³+3аб²+б³

(а+2) (а+2) ²=2а+4а=6а²

(а+2) (а²+4а+2²) =2а×а⁴+4а+4=(2а+а⁴) (4а+4) =2а5+8а

4-не знаю

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The Whipping Boy
In the afternoon Tom had a few moments to himself, and a lad of
about twelve years of age was brought in to him. He came up to Tom
with his head bowed and fell on one knee before him. Tom sat still and
looked at the lad in silence a moment. Then he said:
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The boy rose and said:
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“My whipping boy?”
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Tom did not know what to do or to say.
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“Oh, my poor master,” cried the whipping boy, thinking to himself:
“It is true — he is mad, the poor fellow. But I forget — I was told not
to notice that anything was wrong with him.”
“I often forget many things these days,” said Tom. “But pay no
attention to it. Just tell me what you want.”
“Two days ago when Your Majesty made three mistakes in your
Greek composition in the morning lessons — do you remember it?”
“Yes, I think I do,” answered Tom, thinking: “This is not so far
from the truth. If / had been having a composition in Greek, I should
have made not three mistakes, but thirty.”
“My Lord, your teacher promised to whip me for it and ... ”
“Whip you?” Tom cried in surprise. “Why did he want to whip you
for my mistakes?”
“Ah, My Lord, he always whips you when you don’t know your
lessons.”
“True, true — I have forgotten,” said Tom. “Since you help me to
do my lessons, he says that you don’t teach me well enough, and if I
make a mistake ...”
“Teach You, My Lord? I, the humblest of your servants? Never! But
this is how it is: nobody may strike the Prince of Wales, so when he
makes mistakes, I — his whipping boy — get the blows. It is my work
and I get the wages for it.”
“And have they beaten you, my poor friend?”
“No, Your Majesty, they were going to beat me today, but they
didn’t do it because of the death of the king. Now you are no more
Prince of Wales, you are the King of England, and I am afraid that now
you will throw all your books away, because nobody can tell you now
260
what to do and what not to do. Then I am lost and my poor sisters with
me.”
“Lost? Why?”
“My back is my bread. Oh, My Lord! If you stop studying, you
won’t need any whipping boy and I shall have no work. Don’t turn me
away.”
Tom was sorry for the boy. Besides, he thought the boy could be
useful in the future because he lived in the palace and knew a lot. He
said:
“Rise, Humphrey Marlow, you and your children will always have
the post of whipping boy at the royal house of England. Very soon I
shall take my books again and study so badly that you will get money
three times more than before.”
“Oh, thank you, My Lord! Now 1 shall be happy as long as I live,”
cried out the boy.
Tom asked Humphrey to talk about the people in the palace and the
prince’s lessons in the schoolroom. By the end of an hour he knew a lot
of things about the prince; so he decided to talk with Humphrey more
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