даю 36 баллов номера по алгебре 343 и 345

1) 16ab - 5bc - 10c + 32ac = (16ab + 32ac) - (5bc + 10c) = 16a(b + 2c) -
- 5c(b + 2c) = (b + 2c) (16a - 5c)
2) 6mnk + 15mk - 14nk - 35mn = (6mnk + 15mk) - (14nk + 35mn) =
= 3mk(2nk + 5m) - 7n(2nk + 5m) = (2nk + 5m)(3mk - 7n)
3) - 28ac + 35c - 10cx + 8ax = (- 28ac + 35c ) - (10cx - 8ax) = - 7c(4a - 5c) -
- 2x(5c - 4a) = 7c(5c - 4a) - 2x(5c - 4a) = (5c - 4a)(7c - 2x)
4) - 24bx - 15c + 40bc + 9cx = (- 24bx + 9cx) - (15c - 40bc) = - 3x(8b - 3c) -
- 5c(3c - 8b) = 3x(3c - 8b) - 5c(3c - 8b) = (3c - 8b)(3x - 5c)
1) 5a - 5ax - 7a + 7x = (5a - 5ax) - (7a - 7x) = 5a(a - x) - 7(a - x) =
= (a - x)(5a - 7)
(4 - (- 3))(5*4 - 7) = (4 + 3)(20 - 7) = 7 * 13 = 91
2) m - mn - 3m + 3n = (m - mn) - (3m - 3n) = m(m - n) - 3(m - n) =
= (m - n)(m - 3)
(0,5 - 0,25)(0,5 - 3) = 0,25 * (- 2,5) = - 0,625
3) a + ab - 5a - 5b = (a + ab) - (5a + 5b) = a(a + b) - 5(a + b) =
= (a + b)(a - 5)
(6,6 + 0,4)(6,6 - 5) = 7 * 1,6 = 11,2
4) a - ab - 2a + 2b = (a - ab) - (2a - 2b) = a(a - b) - 2(a - b) =
= (a - b)(a - 2)