根号(x^2-1) =x+mx^2-1=(x+m)^2x^2-1=x^2+2mx+m^22mx=-1-m^2所以,m=0时,方程无实数解m≠0时,x=(-1-m^2)/2m而根号(x^2-1)有意义的条件是x^2-1≥0,即:x≥1或x≤-1x≤-1(-1-m^2)/2m≤-1m>0时,-1-m^2≤-2mm^2-2m+1≥0(m-...