(Корень 7-2корня из 3)*(2корня из 3+корень7)-(корень 6-3корня из 2)в квадрате

(Корень 7-2корня из 3)*(2корня из 3+корень7)-(корень 6-3корня из 2)в квадрате
- Предмет:
  Алгебра
- Автор:
  coralieve2m
- 5 лет назад

Ответы 1

$(\sqrt{7}-2\sqrt{3})*(2\sqrt{3}+\sqrt{7})-(\sqrt{6}-3\sqrt{2})^2=$
$=(\sqrt{7}-2\sqrt{3})*(\sqrt{7}+2\sqrt{3})-(\sqrt{6}-3\sqrt{2})^2=$
$=(\sqrt{7})^2-(2\sqrt{3})^2-((\sqrt{6})^2-2*\sqrt{6}*3\sqrt{2}+(3\sqrt{2})^2)=$
$=7-4*3-(6-6\sqrt{6*2}+9*2)=$
$=7-12-6+6\sqrt{12}-18=$
$=6\sqrt{4*3}-29=12\sqrt{3}-29$
- Автор:
  king18
- 5 лет назад
- 0
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Текст дан следующий:

The Race
Now there began a desperate race, the machines against the foxes.
The machines bit away more and more soil from the hilltop.
Sometimes luck was with the foxes and the terrible noises grew fainter and then Mr Fox said, " We're going to make it ! I'm sure we are !" But then, a few moments later, the machines started to come back at them and the crunch of the mighty shovels got louder and louder. Once the foxes even saw the sharp metal edge of one of the shovels as it bit away the earth just behind them.
" Keep going, my darlings!" panted Mr Fox. " Don't give up!"
" Keep going!: the fat Boggis shouted to Bunce and Bean. " We'll get him any moment now!"
" Have you seen him yet?" Bean called back.
" Not yet," shouted Boggis. " But I think you're close!"
" I'll pick him up with my bucket!" shouted Bunce. " I'll chop him to pieces!"
But by lunchtime the machines were still digging. And so were the poor foxes.
The farmers didn't stop for lunch; they wanted to finish the job.
" Hey there, Mr Fox!" yelled Bunce, leaning out of his tractor. " We're coming to get you now!"
" You've had your last chicken!" yelled Boggis. " You'll never come vto my farm again!"
The tree farmers acted like madmen. The tall skinny Bean and dwarfish pot-bellied Bunce were driving their machines like maniacs, and their shovels were digging very quickly. The fat Boggis was hopping about and shouting, "Faster! Faster!"
By five o'clock in the afternoon the hole the machines had dug was like the crater of a volcano. It looked so unusual that crowds op people came rushing out from the nearby villages to see it. They stood on the edgs of the crater and looked down at Boggis and bunce and Bean.
" Hey there, Boggis! What's going on?"
" We're after a fox!"
" You must be mad!"
The people shouted and laughed. But the three farmers only got more furious and more obstinate and more willing than ever to catch the fox.

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d) Why did the people laugh?
e) Were the farmers more willing than ever to catch the fox/
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(Корень 7-2корня из 3)*(2корня из 3+корень7)-(корень 6-3корня из 2)в квадрате

Ответы 1

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