2012^ 3【(2012+1 )*25+(201 - 知识问答

2012^ 3【(2012+1 )*25+(2012+2)*25+.(2012+25)*25】

1个回答

(2012+1 )*25+(2012+2)*25+.(2012+25)*25
=25*[(2012+1 )+(2012+2)+.(2012+25)]
=25*[2012x25+26x12+13]
=25*(50300+312+13)
=25*50625
=1265625

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