求(x-1)/(x-2)-(x-2)(x-3)=(x-4)/(x-5)-(x-5)/(x-6)
已知分式方程(x+1)/(x-a)=4/(a-x)误解,求a的值
有过程谢谢!
求(x-1)/(x-2)-(x-2)(x-3)=(x-4)/(x-5)-(x-5)/(x-6)
已知分式方程(x+1)/(x-a)=4/(a-x)误解,求a的值
有过程谢谢!
第一道题:
解:原方程可化为
1+1/(x-2)-1-1/(x-3)=1+1/(x-5)-1-1/(x-6)
1/(x-2)-1/(x-3)=1/(x-5)-1/(x-6)
-1/[(x-2)(x-3)]=-1/[(x-5)(x-6)]
1/[(x-2)(x-3)]=1/[(x-5)(x-6)]
(x-2)(x-3)=(x-5)(x-6)
x^2-5x+6=x^2-11x+30
-5x+6=-11x+30
6x=24
x=4
经检验,x=4是原方程的根
第二道题:
∵分式方程(x+1)/(x-a)=4/(a-x)无解
∴分式方程中x=a
方程两边同时乘以(x-a),得
x+1=-4
∴a+1=-4
解得 a=-5