Предмет: Алгебра, автор: FrandMan

2.24. Упростите 1) 52n+3.52n-1 25²n+1 ; выражение: 2) 2m3n-1-2m-1.3n 2m. 3n n, m​

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Ответы

Автор ответа: painofrain
0

Ответ:

1) 3030-9x

2) -\frac{1}{6}

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Допоможіть будь ласка
1.Make up the sentences using the Past Perfect Tense
1) The party (to begin) before James and Chris came.
2) Pamela (not to finish) her project by the end of October.
3) the ferry (to reach) the island by 7 o’clock yesterday? — Yes,
4) Richard (to be) to Sheffield before? — No,.
5) your brother (to book) the tickets for the concert beforehand? — Yes,.
6) Kate ... (to see) this film before it was on at our local cinema.
7) The plane (to land) by the time we got to the airport.
8) Clive (not to attend) computer courses before he entered university.

2.Circle the correct item.
1) Edgar phoned/had phoned me at 8 o’clock yesterday evening.
2) Mary vacuumed/had vacuumed the carpets by 3 o’clock yesterday.
3) We went/had gone home after it stopped/had stopped raining.
4) The waiter brought/had brought the drinks which we ordered/had ordered
before.
5) Angela paid/had paid the money, took/had taken her purchase and left/had
left the shop.
6) Before the Bells chose/had chosen the hotel, they discussed/had discussed all
the details with their travel agent.
7) Paul started/had started working as a designer after he graduated/had
graduated from university.
8) Tom entered/had entered the classroom and closed/had closed the door.
9) When Sam came/had come to the platform, the train already arrived/ had
already arrived.
10) By the time we got/had got home, the film finished/had finished.
3.Put the verbs in brackets into the Past Simple or Past Perfect Tense
1) Before the boys (to leave) the house, Nick(to feed) the dog.
2) Brian (to meet) me after he (to return) from his business trip.
3) Julia (not to know) that Henry (already to find) a new job in a big corporation.
4) Where Mark (to go) after he (to leave) the bank?
5) When Sandra (to see) Mr Thompson, she (to remember) that she (to meet)
him before.

4.Translate into English.
Коли Бен йшов додому, він пригадав, що не купив молока для кота