а) 21+10n+n^2 = (3+n)(7+n)б) 14-9k+k^2 = (2-k)(7-k)в) 42-13b+b^2 = (6-b)(7-b)г) 48-14c+c^2 = (8-c)(6-c)
а) 21+10n+n^2 = (3+n)(7+n)
б) 14-9k+k^2 = (2-k)(7-k)
в) 42-13b+b^2 = (6-b)(7-b)
г) 48-14c+c^2 = (8-c)(6-c)