2008乘以2010+1分之2009^2计算
人气：381 ℃ 时间：2019-11-20 03:10:51
解答
2008乘以2010+1分之2009^2
=2009²/[(2009-1)(2009+1)+1]
=2009²/（2009²-1+1）
=2009²/2009²
=1
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