Ответ:
27a³ -(a-b)³ = 26a³+3a²b-3ab³+b³
729+(b-8)³ = b³-24b²+192b+217
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Ответ:
27a³ -(a-b)³ = 26a³+3a²b-3ab³+b³
729+(b-8)³ = b³-24b²+192b+217