由韦达定理x1+x2=-(m-2)x1*x2=1/2m-3所以2x1+x2=x1+x2+x1+m+1得x1-(m-2)=m+1解得x1=2m-1从而得出:x2=3-3m代入x1*x2=1/2m-3(2m-1)(3-3m)=1/2m-312m²-17m=0所以m=0或者m=17/12{不懂可追问^_^o~ 努力!}
17/12或0,解:x1+x2=2-m;x1x2=1/2m-3;x1=2m-1;(2m-1)(3-3m)=1/2m-3,,m=17/12或0