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用换元法解方程:x+1x-xx+1=32-数学
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解方程:1x+1+1x-1=0.-数学
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解方程:x2=6x2-x+x-1-数学
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解方程:xx+1+1=2x+1x.-数学
题目简介
解方程:x+1-3x+1=2.-数学
题目详情
答案
去分母,得y2-2y-3=0,
解这个方程,得y1=-1,y2=3,
当y=-1时,x+1=-1,所以x=-2;
当y=3时,x+1=3,所以x=2,
经检验,x=2和x=-2均为原方程的解.