4x/(x^2-1)-2/(x+1)=0.
方程通分,[4x-2(x-1)]/[(x+1)(x-1)]=0.
(2x+1)/(x^2-1)=0
则2x+1=0,x^2≠±1
得到x=-1/2
X的平方减一,分之四X,减,X加一分之二 解方程,怎么解
4x/(x^2-1)-2/(x+1)=0.
方程通分,[4x-2(x-1)]/[(x+1)(x-1)]=0.
(2x+1)/(x^2-1)=0
则2x+1=0,x^2≠±1
得到x=-1/2