(a-1)²(a+1)+(a+1)(a-1)
(a²-2a+1)(a+1)+(a²-1)
(a³+a²-2a²-2a+a+1)+a²-1
a³+a²-2a²-2a+a+1+a²-1
a³-a
(-3)³-(-3)
-27+3
-24
ответ:-24
(a-1)²(a+1)+(a+1)(a-1)
(a²-2a+1)(a+1)+(a²-1)
(a³+a²-2a²-2a+a+1)+a²-1
a³+a²-2a²-2a+a+1+a²-1
a³-a
(-3)³-(-3)
-27+3
-24
ответ:-24