а) 21 + 10n + n² = (7 + n)(3 + n)б) 14 - 9k + k² = (7 - k)(2 - k)в) 42 - 13b + b² = (6 - b)(7 - b)г) 48 - 14c + c² = (6 - c)(8 - c)
а) 21 + 10n + n² = (7 + n)(3 + n)
б) 14 - 9k + k² = (7 - k)(2 - k)
в) 42 - 13b + b² = (6 - b)(7 - b)
г) 48 - 14c + c² = (6 - c)(8 - c)