作业帮化简求值：[(3m/(m+2)-m/(m-2)]/[(2m)/m^2-4)],其中m=2/3快!
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 20:09:26
![化简求值：[(3m/(m+2)-m/(m-2)]/[(2m)/m^2-4)],其中m=2/3快!](/uploads/image/z/1259883-27-3.jpg?t=%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%EF%BC%9A%5B%283m%2F%28m%2B2%29-m%2F%28m-2%29%5D%2F%5B%282m%29%2Fm%5E2-4%29%5D%2C%E5%85%B6%E4%B8%ADm%3D2%2F3%E5%BF%AB%21)
化简求值：[(3m/(m+2)-m/(m-2)]/[(2m)/m^2-4)],其中m=2/3快!
化简求值：[(3m/(m+2)-m/(m-2)]/[(2m)/m^2-4)],其中m=2/3
快!
化简求值：[(3m/(m+2)-m/(m-2)]/[(2m)/m^2-4)],其中m=2/3快!
原式={[3m(m-2)-m(m+2)]/(m+2)(m-2)}/[2m/(m²-4)]
=[(3m²-6m-m²-2m)/(m²-4)]/[2m/(m²-4)]
=(2m²-8m)/2m
=2m(m-4)/2m
=m-4
=2/3-4
=-10/3