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计算:1-m/2m-4除以(m+2+3/m-2)
人气:339 ℃ 时间:2020-02-06 00:05:46
解答
=(1-m)/2(m-2) ÷[(m+2)(m-2)+3]/(m-2)
=(1-m)/2(m-2)×(m-2)/(m+1)(m-1)
=-1/2(m+1)
=-1/(2m+2)
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