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数学
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(3m²n）²×（-2m²）^4×（-n²）^ 5
人气：186 ℃ 时间：2019-11-13 00:40:26
解答
（3m²n﹚²·﹙﹣2m²﹚^4·﹙﹣n²﹚^5
=-9m^4n^2x16m^8xn^10
=-144m^12 n^12
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