(a²-b²)(a²+ab+b²)(a²-ab+b²)计算
(a+1)(a²-a+1)=a³+1
(a-2)(a²+2a+4)=a³-8
人气:335 ℃ 时间:2020-01-26 09:24:08
解答
(a²-b²)(a²+ab+b²)(a²-ab+b²)=(a-b)(a+b)(a²+ab+b²)(a²-ab+b²)=(a³-b³)(a³+b³)=a^6-b^6(a+1)(a²-a+1)=a³+1(a-2)(a²+2a+...
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