已知6a的m-5次方除以-2ab的n=-3a的7次方b 求m的n次方
人气:403 ℃ 时间:2019-08-22 13:43:12
解答
m-5-1=7
则,m=13
n=-1
m的n次方=13的-1次方=13分之1
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