化简3a^3+3a^2
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化简3a^3+3a^2化简3a^3+3a^2化简3a^3+3a^23a³+3a²=3a²xa+3a²=3a²(a+1)3a^3+3a^2=3a(a+1
化简3a^3+3a^2
化简3a^3+3a^2
化简3a^3+3a^2
3a³+3a²=3a²xa+3a²=3a²(a+1)
3a^3+3a^2
=3a(a+1)
收起
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