((a=b) в квадрате - (a-b) в квадрате) умножить ( на дробь 1\a + дробь 1\b) упростить выражение и найти его значение при a= 1- корень из 7, b= 3+ корень из 7

разложите многочлен на множители:  2a + 4b - ab - 2b во второй степени

Помогите пожалуйста!! Очень срочно!! Нужно встаить слова в пропуски, там даны первые буквы этих слов. Слова которые нужно вставить во вложении. 

1) I've been invited to a party on Saturday but, to be honest , i'm rather r... to go
2) In the old days skates were f... to shoes with pieces of string
3) Do you think the book is w.... buying ? Have you read anything by this author?
4) The wind was strong and the dog's long ears were f.... in the air.
5) Recently i've become quite a... to the Smiths. They are such a nice family !
6) My grandmother says when she was young they s... linen after washing it.
7) The only f... that i have ever seen was my great-grandfather's. He died a couple of years ago.
8) If you d... the long handle from the pan , you can use the pan in the oven.
9) What is traditional o... of an english nurse.
10) I don't like the look of that i.... cloud . It looks like rain.
11) It's not polite to ch.... and the talk at the same time.
12) When we met Bryan that day his face was s... and unsmiling .
13) You and your r... ideas! Why should you always think of something stupid !
14) Sally gave us a d.... look and left the room without saying a word .
15) Father said " No " so f.... that we understood he would never change his mind

Решите уравнение: 10k + 2 * ( 7k - 2) = 5 * ( 4 k + 3) + 3K

Ответьте на вопросы:

1) Were you reading at 2 o clock yesterday ?

2) Do you go to school every day ?

3) What are you doing now?

4) Did you walk yesterday ?

5) Will you visit your friends tomorrow ? 

6) What have you eaten for dinner ?

помогите мне я помогу вам