1)-в³=-в*в*в
2)+с³=+с*с*с
3)-d³=-d*d*d
4)+t³=+t*t*t
5)+z³=+z*z*z
6)y³-=y*y*y-
7)k³+=k*k*k+
8)-z³=-z*z*z
1)a³-27b³=a²*a-3b²*9b
3)x⁶-y⁶=(x³-y³)²
5)(a-b)³+b³=a³-3a²b+3ab²-b³+b³=a³-3a²b+3ab²=a(a²-3ab+3b²)
7)8a³+(a-b)³=8a³+a³-3a²b+3ab²-b³=9a³-3a²b+3ab²-b³=3a(3a²-ab+b²)-b³