Заблаговременно спасибо!!!!!!!!!!!!!!

1) 1) a) 3ab - 3ac = 3a (b - c) = 3a (b - c)(b + c) ;   b) 14 p - 1 ;  v) - 5k + 5 = 5 (1 - k)(1 + k);   g) 162ay - 2a = 2a(81y - 1) = 2a (9y - 1)(9y + 1);  d) 100c - 81c = 19c;  e) 32xy - 2x = 2x (16xy - 1);  2)  a) 12x + 12xy + 3y = 3 (4x + 4xy + y) =  3 (2x + y);  b) ab - 2ab + a = a (b - 2b + 1) = a (b - 1);  v) 27x + 3xy - 18xy = 3x (9x + y - 6xy);   g) -100xy + 20xy - 1 = - (10xy - 1);   3) a) a - 4a - 2a + 8 = (a - 2a) - (4a - 8) = a (a - 2) - 4(a - 2) = (a - 2) (a - 4);  b) a - a + a - 1 = a (a - 1) + (a- 1) = a(a - 1)(a + 1) + (a - 1) = (a - 1) ( a (a + 1) + 1) =(a - 1) ( a + a +1) ;   v) 9x - 12x + 4 - y = (3x - 2) - y = (3x - 2 - y) (3x - 2 + y);  g) c - x - 2xy - y = c - (x + y) = (c - x - y) (c +x +y);   5) a) (n + 6 + n - 6) (n + 6 - n + 6) = 2n 12 = 24n делится на 24; b) (3n + 1 + n - 1) (3n + 1 - n + 1) = 4n 2(n+ 1) = 8n (n + 1) делится на 8;