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解方程:1-x2-x-3=1x-2-数学
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题目简介
解方程:2x-1=4x2-1-数学
题目详情
答案
2(x+1)=4,
解得:x=1.
检验:把x=1代入(x-1)(x+1)=0.
∴x=1是方程的增根,原方程无解.