解方程:2/(x+1)-3x/(1-x)=5/(1-x²)
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解方程:2/(x+1)-3x/(1-x)=5/(1-x²)
解方程:2/(x+1)-3x/(1-x)=5/(1-x²)
解方程:2/(x+1)-3x/(1-x)=5/(1-x²)
2/(x+1)-3x/(1-x)=5/(1-x²)
两边乘(1+x)(1-x)
2(1-x)-3x(1+x)=5
2-2x-3x-3x²=5
3x²+5x+2=0
(3x+2)(x+1)=0
x=-2/3,x=-1
经检验,x=-1时分母为0,舍去
所以x=-2/3