x2+(2m+1)x+m2=0判别式=4m^2+4m+1-4m^2 =4m+1>0m>-1/42)x1+x2=-(2m+1),x1*x2=m^2(x1)^2+(x2)^2=(x1+x2)^2-2x1*x2=4m^2+4m+1-2m^22m^2+4m+1=7m^2+2m-3=0m=-3,m=1经经验，m=-3不合题意。所以m=1看完了好评我哦~~
