化简:(2010²+2008)÷(2008²-2010)×(2007²-2007)÷(2008×2011-4)
人气:253 ℃ 时间:2020-04-26 22:13:48
解答
[(2008+2)²+2008]÷(2008²-2008-2)×(2007²-2007)÷[(2007+1)×(2007+4)-4]
=(2008²+5×2008+4)÷(2008+1)(2008-2)×(2007²-2007)÷(2007²+5×2007+4-4)
=(2008+1)(2008+4)÷(2008+1)(2008-2)×2007(2007-1)÷2007(2007+5)
=(2008+4)÷(2008-2)×(2007-1)÷(2007+5)
=2012÷2006×2006÷2012
=1
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