даю з0 пунктов
2m / m^2-4 -2/ m^2-4 : (m+1 / 2m-2 - 1/ m-1)
по действиям
1)m+1/2m-2-1/m-1=m+1/2(m-1)-1*2/m-1=m+1-2/2(m-1)=m-1/2(m-1)=1/2
2)2/m^2-4*2/1=4/m^2-4
3)2m/m^2-4-4/m^2-4=2m-4/m^2-4=2(m-2)/(m-2)(m+2)=2/m+2
Ответ:2/m+2
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Verified answer
1)m+1/2m-2-1/m-1=m+1/2(m-1)-1*2/m-1=m+1-2/2(m-1)=m-1/2(m-1)=1/2
2)2/m^2-4*2/1=4/m^2-4
3)2m/m^2-4-4/m^2-4=2m-4/m^2-4=2(m-2)/(m-2)(m+2)=2/m+2
Ответ:2/m+2