xm6的知识精选

已知xm=6,xn=3,则x2m﹣n的值为(  )A.9                       B.39...
问题详情:已知xm=6,xn=3,则x2m﹣n的值为()A.9                       B.39                       C.12                     D.108【回答】C解:∵xm=6,xn=3,...
已知xm=6,xn=3,则的x2m﹣n值为(    )A.9      B.     C.12    D.
问题详情:已知xm=6,xn=3,则的x2m﹣n值为(    )A.9      B.     C.12    D.【回答】C【考点】同底数幂的除法;幂的乘方与积的乘方.【分析】根据同底数幂的除法的*质的逆用和幂的乘方的*质计算即可.【解答】解:∵...
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