计算：1-m/2m-4除以(m+2+3/m-2)

分类: 作业答案 • 2021-12-18 16:26:01

问题描述：

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)