m²+m≠0
m(m+1)≠0
m≠0且m≠-1
m²-m=2
m²-m-2=0
(m-2)(m+1)=0
m=2或m=-1不是啊，答案只有2我以为是2个问-_-m²+m≠0m(m+1)≠0m≠0且m≠-1m²-m=2m²-m-2=0(m-2)(m+1)=0m=2或m=-1因为m≠0且m≠-1所以m=2请点击“采纳为满意答案”,祝学习进步！