(x+1)/(x-1)
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4/(x^2-1)=1在第一个分式的分子分母上同时乘上x+1,1写成(x^2-1)/(x^2-1)变成(x+1)^2/(x^2-1)
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4/(x^2-1)=(x^2-1)/(x^2-1),也就是(x+1)^2-
4=x^2-1解得x=1,因为x^2-1不等于0.所以该方程无解
(x+1/4)的平方-(x-1/4)(x+1/4)=1/4
(x+1/4)(x+1/4-x+1/4)=1/4
(x+1/4)(1/2)=1/4
x+1/4=1/2
x=1/4
祝学习进步
1/4