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题目简介
解方程:1x+2xx+1=2-12x.-数学
题目详情
答案
2(x+1)+4x2=4x(x+1)-(x+1),
2x+2+4x2=4x2+4x-x-1,
2x-4x+x=-1-2,
-x=-3,
x=3,
检验:当x=3时,2x(x+1)=2×3×(3+1)=24≠0,
所以x=3是原方程的解,
因此,原分式方程的解是x=3.