ВЫЧИСЛИТЕ 8а³+3а²b-5ab²+b³-(18a³-3a²b-5ab²+2b³)=
8а³+3а²b-5ab²+b³-(18a³-3a²b-5ab²+2b³)= 8а³+3а²b-5ab²+b³-18a³+3a²b+5ab²-2b³= -10a³ -b³ +6а²b