分子=2010^3-2*2010^2-2008=2010^2(2010-2)-2008=(2010^2-1)*2008
分母=2010^3+2*2010^2-2012=2010^2*2012-2012=(2010^2-1)*2012
所以原式=2008/2012=502/503
(2010的三次方减2乘2010的平方减2008)除以(2010的三次方加2乘2010的平方减2012)要过程,
(2010的三次方减2乘2010的平方减2008)除以(2010的三次方加2乘2010的平方减2012)要过程,
数学人气:967 ℃时间:2019-10-19 21:56:54
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