二的2009次方加负二的2010次方 2^2009+(-2)^2010
二的2009次方加负二的2010次方 2^2009+(-2)^2010
数学人气：817 ℃时间：2019-08-19 20:50:11
优质解答
0嘛,2和—2相加,得0,再乘
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