一元二次方程（m-2）x2-4mx+2m-6=0有两个相等的实数根，则m等于______．
人气：423 ℃ 时间：2019-08-22 13:42:47
解答
∵一元二次方程（m-2）x2-4mx+2m-6=0有两个相等的实数根，
∴△=b2-4ac=16m2-4（m-2）（2m-6）=0，解得m=1或m=-6．
推荐
猜你喜欢
- happiness is for everyone.求译!
- 写小数时,整数部分仍按( )的写法,整数部分是0的要写( ).
- 《人民解放军百万大军横渡长江》一文是按什么顺序报道三路军的渡江作战的?为什么这样安排顺序?
- 屏风,纳凉,帷幕,缓冲,造型,伧俗、雅俗之别造句
- To turn your dream into reality,you should first ______the hard life here which you has not got used to so far
- 足球循环赛中,红队胜黄队,比分为4:1,黄队胜蓝队,比分为1:0,蓝队胜红队,比分为1:0,算各队的净胜球数.
- 2.2*(-2.1)+1.21*4.2-2.1*0.22简算!
- it took him three hours to clean his bedroom的同义句
