(54)3=54·_____·_____=54+4+4=_____;(xy)2=(xy)·(    )=(x·x)(    )=_____.

 

答案:
解析:

54 ; 54 ; 512 ; xy ; y·y ; x2y2

 


提示:

冪的乘方,底數(shù)不變,指數(shù)相乘.

 


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