4-m^2/(m+4)^2÷m-2/2m+8×m-2/m+2

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4-m^2/(m+4)^2÷m-2/2m+8×m-2/m+2
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4-m^2/(m+4)^2÷m-2/2m+8×m-2/m+2
4-m^2/(m+4)^2÷m-2/2m+8×m-2/m+2

4-m^2/(m+4)^2÷m-2/2m+8×m-2/m+2
原式=(4-m)(4+m)/(4+m)^2*2(m+4)/(m-4)*(m-2)/(m+2)=-2*(m-2)/(m+2) =4-2m/m+2很高兴为您解答,【学习宝典】团队为您答题.请点击下面的【选为满意回答】按钮,