Ответ:
(a+b)×b-(a²+b²)(a-2)=ab+b²-a³+2a²-ab²+2b²=ab+3b²-a³+2a²-ab²
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Ответ:
(a+b)×b-(a²+b²)(a-2)=ab+b²-a³+2a²-ab²+2b²=ab+3b²-a³+2a²-ab²