简算3的2005次方+6*3的2004次方-3的2006次方
人气:497 ℃ 时间:2019-10-19 05:11:34
解答
3^2005+6*3^2004-3^2006
=3^2005+2*3*3^2004-3*3^2005
=3^2005+2*3^2005-3*3^2005
=3*3^2005-3*3^2005
=0
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