Предмет: Алгебра, автор: qwertyuioahji

помогите пожалуста даю 15 балов ​

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Ответы

Автор ответа: boda46537
0

Ответ:

а)xa+xb

б)ab+ac-4a

в)18a²-6a³

г)3c⁵+6c²-3c

Объяснение:

формула: a(b+c)=ab+ac; a(b-c)=ab-ac

И еще такой случай: -a(-b+c)=ab-ac (учитывай что - на - будет +; - на + будет -)

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Предмет: Английский язык, автор: oparinamiroslava1
Reading Comprehension

Term 1

Hello! My name is Bohdan. I am in the 5-th form. I’ve got a sister. Her name is Olha. She is a pupil of the 7-th form. Olha is very pretty. She is tall and slim. She has got large blue eyes and brown wavy hair. She is very polite and helpful and everybody likes her.

Olha is fond of flowers, music and books. She plays the piano. I am not interested in flowers. I am keen on cars, horses and dogs.

Olha likes English very much and she knows it very well. She is good at reading English books, singing English songs and writing emails in English. She always gets good marks in English.

I also like English but I am not as good at it as my sister is. My sister and I always do our homework together. We learn new words, read texts and do exercises. We sometimes speak English at home. We speak about our school and lessons, about books and films.



I. Say if the sentences are true or false (чи правдиві речення).

1. Bohdan’s sister does not go to school.

2. Olha has got blue eyes and her hair is brown.

3. Olha likes music and she can play the guitar..

4. Olha is not very good at English.

5. Bohdan is better at English than his sister.

6. Bohdan and Olha never do their homework together.



II Choose the correct variant to complete the sentence (обери правильний варіант)

1. Bohdan is ...

a) polite and interested in cars and dogs.

b) good at writing emails and keen on cars, horses and dogs.

c) not interested in flowers, keen on cars, horses and dogs.

d) very good at English and keen on cars, horses and dogs.

2. Olha is …

a) very pretty, polite and helpful.

b) fond of flowers, dogs and books.

c) good at English, fond of flowers and dogs.

d) short, slim and very pretty.

3. Bohdan likes …

a) reading books, dogs and English.

b) flowers, writing emails and cars.

c) dogs, cars and English.

d) music, reading books and English.

4. Olha likes …

a) English, music and flowers.

b) music, books and horses.

c) everybody, English and singing songs.

d) doing homework, playing the piano and dogs.

III. Answer the questions.

1. What does Olha look like?

2. Why does everybody like Olha?

3. What is Olha good at ?

4. Who likes English?

5. What do Olha and Bohdan always do together?

6. What do children speak at home about?
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