Ответы и объяснения

  • June
  • хорошист
2011-01-16T03:47:49+00:00
49-(m-3)^2 = (7 - (m-3)) * (7 + (m-3)) = (7 - m + 3) * (7 + m - 3) = (10 - m) * (4 + m)