a²-ab²-ab-4b³-a³-3a²b
Объяснение:
(a-b)(a+2b²)-(a+b)³-b³=a²+2ab²-ab²-2b³-(a+b)³-b³=a²+2ab²-ab²-2b³-(a³+3a²b+3ab²+b³)-b³=a²+2ab²-ab-2b³-a³-3a²b-3ab²-b³-b³=a²-ab²-ab-4b³-a³-3a²b.
a²-ab²-ab-4b³-a³-3a²b
Объяснение:
(a-b)(a+2b²)-(a+b)³-b³=a²+2ab²-ab²-2b³-(a+b)³-b³=a²+2ab²-ab²-2b³-(a³+3a²b+3ab²+b³)-b³=a²+2ab²-ab-2b³-a³-3a²b-3ab²-b³-b³=a²-ab²-ab-4b³-a³-3a²b.