用配方法等式两边同除以2m²；+m/2-3/2=0(m²；+2*m/4+1/16)-1/16-3/2=0(m+1/4)²；=25/16m+1/4=±5/4m=±5/4-1/4m1=1m2=-1.5
2+m(m-3)=m²-3m+2=(m-1)(m-2)=0所以m=1或2
