Помогите пожалуйста!! Сделайте сколько можете! Даю 60 баллов!! Срочно!! Надобно сделать

1. 
1) x - 9p;
2) m - 49n
3) x - 8x + 16y = (x - 4y)
4) (a - 3b) = a - 6ab + 9b
5) (- 4x - 3y) = (4x + 3y) = 16x + 24xy + 9y
6) ( - a + 2b) = a - 4ab + 4b
7)  9y - x
8) (m - 3n) = m - 6mn + 9n
9) (2n + 9x) = 4n + 36nx + 81x
10)  - (a + 1) = - a - 2a - 1
11)  3(x - y) + (x + y) = 3x - 3y + x + 2xy + y
12)  -5(a - 1) + (a + 1) = - 5a + 5 + a - 1 = - 4a + 4
2.  1) 9x - 16 = (3x - 4)(3x + 4)
2)  25 - 1/81y = (5 - 1/9y)(5 + 1/9y)
3)  (x + y) - 25 = (x + y - 5)(x + y + 5)
4)  1 + 2c + c = (1 + c)= (1 + c)(1 + c)
5)  4m - 4m + 1 = (2m - 1) = (2m - 1)(2m - 1)
6)  25x - 10x + 1 = (5x - 1) = (5x - 1)(5x - 1)
7)  4x + 4xy + y = (2x + y) = (2x + y)(2x + y)
8)  - 24c + 16 + 9c = (3c - 4) = (3c - 4)(3c - 4)
9) x - 1 = (x - 1)(x + x + 1)
10) 8 + y = 2 + y = (2 + y)(4 - 2y + y)
11)  c - 27 = (c) - 3 = (c - 3)(c + 3c + 9)