2a^2 + 2ab + 2ac - 2ab + 2bv + 2cv - 2bv + 2cv + 2cs - 2cs2a^2 + 4cv
3с^2 - 6с - c^2 + 4c - 32с^2 - 2с - 3
2a^2 + 2ab + 2ac - 2ab + 2bv + 2cv - 2bv + 2cv + 2cs - 2cs
2a^2 + 4cv
3с^2 - 6с - c^2 + 4c - 3
2с^2 - 2с - 3