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数学
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化简a³-8
人气:492 ℃ 时间:2020-07-02 01:20:20
解答
原式=a³-2a²+2a²-4a+4a-8
=a²(a-2)+2a(a-2)+4(a-2)
=(a-2)(a²+2a+4)
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