упростите выражение:
(6а-3b)²+(9+2b)²

b(b-3)-(b-4)²

(12а-b)²-(9a-b)(16a+2b)

x(2x-9)²-2x(15+x)²

(x+2)²-(x-3)(x+3)

(7a-5b)(7a+5b)-(4a+7b)²

(y-2)(y+3)-(y-1)²+(5-y)(y+5)

помогите пожалуйста:::::

Write the verbs in the correct  forms.

1.i (to go) to bed at 10 o'clock every day.

2.i (to go) to bed at 11 o'clock yesterday.

3.we (not to have) Histery every day.

4.my sister (not to like) milk.

5.he ( to come home) at 6 o'clock yesterday.

6.his parents (to give) him s nice present yesterday.