(m+1)x^2+(2m-4)x+m-3=0(m不=1)解方程

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(m+1)x^2+(2m-4)x+m-3=0(m不=1)解方程
(m+1)x^2+(2m-4)x+m-3=0(m不=1)解方程

(m+1)x^2+(2m-4)x+m-3=0(m不=1)解方程
(m+1)x^2+(2m-4)x+m-3=0
mx^2+x^2+2mx-4x+m-3=0
m(x^2+2x+1)+(x^2-4x-3)=0
m(x+1)^2+(x+1)(x-3)=0
(x+1)[m(x+1)+(x-3)]=0
(x+1)[(m+1)x+(m-3)]=0
x+1=0
x=-1
(m+1)x+(m-3)=0
x=-(m-3)/(m+1)