一元二次方程:(m-1)x²+(m²2m+2)x-8=0互为相反数根则m=()
后面是(m²-3m+2)x-8=0
人气:277 ℃ 时间:2019-12-20 09:46:47
解答
两根互为相反数,
所以:
-(m-1)分之(m ²-3m+2)=0
即:
(m²-3m+2)=0
(m-1)(m-2)=0
所以:m=1或者m=2
因为:m-1≠0,即m≠1
所以:m=2
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