Предмет: Алгебра, автор: LENOCHKA13

Преобразуйте многочлен (5-в)(5+в)-2в(в-3)

Ответы

Автор ответа: Гоша68

0

(5-в)(5+в)-2в(в-3)= 25-b^2-2b^2+6b=-3b^2+6b+25

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Русский язык, автор: T7d7t4ursug

Помогите пожалуйста

7 лет назад

Предмет: Английский язык, автор: aidenok86

Read the text and do the task below.

Look at the e-mail. Your friend Chris has just moved to England. He has sent you a letter about his new school.

Dear friend!

     I'm fine and hope the same for you. I'm writing this letter telling you about my first day at the new school.

My new school is very big. It has four floors, a lot of stairs, big dassrooms and huge lunch room where you get to pick your own lunch. It has a park across the street called Douglas and a playground in the back and you can go to the park or the playground at the break.

     My classroom is on the second floor. It's light and clean. There are three large windows in my classroom. On the walls of our dassroom there are different colour maps, portraits and posters.

    There are many opportunities to go in for sports in our school. Our school has a gym, a sports ground, a

football field, a swimming pool and other sports facilities.

     However I'm feeling very unhappy. Because, I haven't got any friends here. I tried very hard to make

friends at school, but people don't like to talk to me.

    Can you tell something about the ways I can make friends? Please, give me some advice.

Love, Chris.

Mark sentences True or False.

1. Chris's school is very big. It has five floors. ____ [ 1 ]

2. It has a playground in the back. ____ [ 1 ]

3. His classroom is on the second floor. ____ [ 1 ]

4. Our school has a sports ground and a swimming pool. ____ [ 1 ]

5. I didn't try very hard to make friends at school. ____ [ 1 ]

6. I'm feeling very unhappy. _____ [ 1 ]

                                                                                                                                                                                  [ 6 ]

Task 2.Writing Task. Write a short text about your classroom. (50-60 words, 7-8 sentences).

Useful language:

My classroom is/has…

a location (on the floor, on the first floor, on the second floor…)

a size (large, big, small…)

has got (… desks, whiteboard, …chairs, …posters, …bookсase, …books, …windows, …flowers…)

your favourite subject (Literature, English, Maths…)

Do you like your classroom?

7 лет назад

Предмет: Математика, автор: Аноним

Задание 1. Упростите выражение и решите уравнение:

8 (2m+ 5) – 59 = 125

Помогите срочно

7 лет назад

Предмет: Алгебра, автор: Kamilla123

найдите область определения функции y=x-1/sinx

10 лет назад

Предмет: Химия, автор: Леля18

Качественные реакции на ионы.

Напишите пож молекулярные ионные и сокращенные ионные уравнения:

SO3 сульфит ион (K2SO3)

SO4 сульфат ион (Na2SO4)

PO4 фосфат ион (K3PO4)

NO3 нитрат ион (Na NO3)

SiO3 cиликат (K2SiO3)

10 лет назад