12c(3c 4) - (6c 5)^212c(3c 4)−(6c 5) 2 July 8, 2019 16 32 64 128 12c(3c + 4) - (6c + 5)^212c(3c+4)−(6c+5) 2 12c(3c + 4) - (24c ^ 2 - 14c) - 62c = 0 ответ
