计算2001*(1/8-1/2009) 8*(1/2001-1/2009) 2009*(1/8-1/2001)

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计算2001*(1/8-1/2009) 8*(1/2001-1/2009) 2009*(1/8-1/2001)
x){nuӍ 4 -t lKM $ Hj 5m)ү_`gC ҩ` զkQ40ņĪA5&c[*<ٵIϚVYDE3OV<횭tYӳys}6̽:6yv=:

计算2001*(1/8-1/2009) 8*(1/2001-1/2009) 2009*(1/8-1/2001)
计算2001*(1/8-1/2009) 8*(1/2001-1/2009) 2009*(1/8-1/2001)

计算2001*(1/8-1/2009) 8*(1/2001-1/2009) 2009*(1/8-1/2001)
2001*(1/8-1/2009) 8*(1/2001-1/2009) 2009*(1/8-1/2001) =2001*(1-8/2009)*(2009/2001-1)*(1/8-1/2001) =2001*(2001/2009)*(1+8/2001-1)*(1/8-1/2001) =2001*(2001/2009)*1/2001*(1-8/2001) =(2001/2009)*(1993/2001) =1993/2009 亲,请您点击【采纳答案】,您的采纳是我答题的动力,如果不明白,