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b2. D=25+56=81x1=-1 x2=3,5Ответ: -1В3. умножим обе части уравн. на 123(1-х^2)=12-4(2x+3)3-3x^2=12-8x-12-3x^2=8x=3=0D= 64+36=100x1= 3 x2=-1/3
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buffalousnd - 5 лет назад
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Раскройте скобки, употребляя Present Perfect, Present Simple, Present Continuous, Past Simple или Past Continuous.
1) As soon as I (to see him), I (to understand) that he (to work) hard. He (to write) something and (not to notice anything.
2)When I (to come) home yesterday, the children (to run) and (to sing) merrily. "We (to learn) a new song! they cried.
3)When the young man (to enter) the room, she (to look) at him in surprise. "What you (to want) to tell me? She (to say). Why you (to come)?
4) It (to rain) hears when I (to leave) home yesterday, so I (to return), (to put) on my raincoat and (to start) again.
5) Your brother (to return) from the north? -Yes, he (to come) a few days ago.
6) You (to be) to the Crimea? When you (to be) there? - I (to be) there in 1993.
7) Where (to be) your brother?- He just (to come) home. He (to take) a shower in the bathroom now.-
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