判别式=4m^2+8m+4-4m^2+8
(1)有两个不相等的示数根 判别式=4m^2+8m+4-4m^2+8>0 m>-3/2 m≠±√2
2.有两个相等的实数根 判别式=4m^2+8m+4-4m^2+8=0 m=-3/2
3.没有实数根 判别式=4m^2+8m+4-4m^2+8
当m取何值时方程(m^2-2)x^2-2(m+1)x+1=0
当m取何值时方程(m^2-2)x^2-2(m+1)x+1=0
(1)有两个不相等的示数根
（2）有两个相等的实数根
（3）没有实数根
(1)有两个不相等的示数根
（2）有两个相等的实数根
（3）没有实数根
数学人气：246 ℃时间：2020-04-03 08:53:41
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