Замените М многочленом так,чтобы равенство было верным : M-(4xy + 3y^2) = x^2+xy-y^2

Выбрать правильное:

1 He (gave / was given) a present to her.

2 She (gave / was given) this present for her wedding anniversary.

3 My bike (runs / is run) very fast.

4 He (knocked down / was knocked down) by a bike yesterday.

5 Her house (ruined / was ruined) in the fire.

6 I don't know anything about building. I (will have built my house / will have my house built).

7 Although she is a professional cook, she (has all her cakes made / makes all the cakes).

8 She is a hair-dresser, so she (has had her new hair-style done / has done her hew hair-style).

9 I didn't go to the post office. I (had all the letters sent by my secretary / had sent all the letters).

10 Our son (had had his bike repaired / had repaired his bike). We were so proud of him.

почему темпы приватизации торговли и сферы услуг были более высокими, чем в промышленности?