Упростите выражение срочно поже:a^2+2ab+3b^2-3a^2-4ab+b^2+2a^2-3ab+4b^2

1. Упорядочить данную последовательность по убыванию. Массив задан датчиком случайных чисел на интервале [-54, 33]. Размер произвольный.

Измените предложения, поставив их в вопросительную форму:

1.      We have mathematics today.  Have   we mathematics today?

2.      This is a nice town.

3.      You are an engineer.

4.      My friend has English books.

5.      There is a new stadium in the town.

6.      I have a beautiful picture.

7.      She has many relatives.

8.      They have a flat  in Moscow.

9.      She has an uncle.

10.   We have a clever dog.

11.  There are two lifts in the  house.

12.  He is a worker.

13.  I am very busy.

14.  They have a car.