分类：教育/科学-学习帮助
问题：求简分式(2m^2+m
(2m^2+m-3)/(4m^2-9)
回答：(2m^2+m-3)/(4m^2-9)
=(2m+3)(m-1)/(2m-3)(2m+3)
=(m-1)/(2m-3)