m^2-3m+2=0 (m-1)(m-2)=0 m=1或者m=2
解：m^2-2*(3/2)*m+（3/2）^2-9/4-1=-3 (m-3/2)^2=-3+1+9/4 (m-3/2)^2=1/4 所以m-3/2=1/2 或m-3/2=-1/2 则m=2或m=1
