1/(m^2-m)+(m-5)/(2m^2-2) 分式计算

问题描述:

1/(m^2-m)+(m-5)/(2m^2-2) 分式计算
1个回答 分类:数学 2014-10-04

问题解答:

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1/(m^2-m)+(m-5)/(2m^2-2)
=1/[m(m-1)]+(m-5)/[2(m+1)(m-1)]
=2(m+1)/[2m(m+1)(m-1)]+m(m-5)/[2m(m+1)(m-1)]
=[2(m+1)+m(m-5)]/[2m(m+1)(m-1)]
=(m²-3m+2)/[2m(m+1)(m-1)]
=(m-1)(m-2)/[2m(m+1)(m-1)]
=(m-2)/[2m(m+1)]
 
 
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