1.﹙-ab﹚²×﹙-a²b﹚×a³b 2.﹙-3x的m+2次方y的2n次方﹚×﹙4x的3-m次方y﹚
人气:439 ℃ 时间:2019-09-20 06:05:20
解答
﹙-ab﹚²×﹙-a²b﹚×a³b=a²b²×﹙-a²b﹚×a³b=-a^4b³×a³b=-a^7b^42.﹙-3x的m+2次方y的2n次方﹚×﹙4x的3-m次方y﹚=-12x的m+2+3-m次方y的2n+1次方=-12x的5...
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