计算{-2}^2010+[-2]^2011,
人气：155 ℃ 时间：2019-12-23 12:07:12
解答
{-2}^2010+[-2]^2011 先定符号
=2^2010-2^2011 再提取公因式2^2010
=2^2010(1-2)
=-2^2010
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