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> 若方程x-1x-2=m2-x无解,则m=______.-数学
若方程x-1x-2=m2-x无解,则m=______.-数学
题目简介
若方程x-1x-2=m2-x无解,则m=______.-数学
题目详情
若方程
x-1
x-2
=
m
2-x
无解,则m=______.
题型:填空题
难度:中档
来源:不详
答案
方程两边同乘x-2,得x-1=-m,
∴x=1-m.
由于此整式方程一定有解,则此解使最简公分母为0.
当x-2=0时,x=2,
∴1-m=2时,m=-1.
故若方程
class="stub"x-1
x-2
=
class="stub"m
2-x
无解,则m=-1.
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题目简介
若方程x-1x-2=m2-x无解,则m=______.-数学
题目详情
答案
∴x=1-m.
由于此整式方程一定有解,则此解使最简公分母为0.
当x-2=0时,x=2,
∴1-m=2时,m=-1.
故若方程