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(-5a³)²+(-3a²)²*(-a²)
人气:297 ℃ 时间:2019-12-08 21:52:25
解答
(-5a³)²+(-3a²)²*(-a²)
=25a^6+(9a^4)(-a²)
=25a^6-9a^6
=16a^6
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