分式方程无解
若(X-a/X-1)-(3/X)=1无解,则a=?
请写出过程.
人气:151 ℃ 时间:2020-02-05 07:00:17
解答
(X-a/X-1)-(3/X)=1
左右两边同乘x(x-1)
x(x-a)-3(x-1)=x(x-1)
x^2-ax-3x+3=x^2-x
(a+2)x-3=0
无解
a+2=0
a=-2
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