3a 4 6a 2 5a 22 July 8, 2019 16 32 64 128 Xy 3a 4 yz 6a 2 xz 5a 22 (6a ^ 3 - 4)/(5a) - (a ^ 3 - 4)/(5a) 6a ^ 3 - 4a ^ 2 - 5a ^ 3 + 6a ^ 2 якщо a = - 2
