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(-4a^3+12a^3b^3)(-4a^2)
人气:210 ℃ 时间:2020-06-08 04:33:33
解答
(-4a^3+12a^3b^3)(-4a^2)
=-4a^3×(-4a^2)+12a^3b^3 ×(-4a^2)
=16a^5-48a^5b^3
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