(2m/m+2-m/m-2)÷m/m∧2-4

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(2m/m+2-m/m-2)÷m/m∧2-4

(2m/m+2-m/m-2)÷m/m∧2-4
 

(2m/m+2-m/m-2)÷m/m∧2-4

(2m/m+2-m/m-2)÷m/m∧2-4
书写不规范哦!
是[2m/(m+2)-m/(m-2)]÷m/(m²-4)吧?
  是的话,原式=[2m*(m-2)/(m+2)(m-2) -m(m+2)/(m-2)(m+2)]÷m/(m+2)(m-2)
  =m(m-6)/(m+2)(m-2)÷m/(m+2)(m-2)
  =m-6

暂无照片。怎么回事?


={2m(m-2)-m(m+2)}/{(m+2)(m-2)}÷m/(m²-4)
={m(m-6)}/(m²-4)÷m/(m²-4)
=m-6

[(2m/(m+2)-m/(m-2)]÷m/(m^2-4)
=[2m*(m-2)/(m+2)(m-2) -m(m+2)/(m-2)(m+2)]÷m/(m+2)(m-2)
=m/(m+2)(m-2)÷m/(m+2)(m-2)
=1

m^2-4可以化成(m+2)(m-2)

没题哦,太急了吧