解一道分式方程! X/(X-1)-(X-1)/(X-2)=(X-3)/(X-4)-(X-4)/(X-5)
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发布时间:2024-10-02 20:15
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热心网友
时间:2024-10-20 11:19
X/(X-1)-(X-1)/(X-2)=(X-3)/(X-4)-(X-4)/(X-5)
(X-1+1)/(X-1)-(X-2+1)/(X-2)=(X-4+1)/(X-4)-(X-5+1)/(X-5)
1+1/(X-1)-[1+1/(X-2)]=1+1/(X-4)-[1+1/(X-5)]
1/(X-1)-1/(X-2)=1/(X-4)-1/(X-5)
1/(X-1)+1/(X-5)=1/(X-2)+1/(X-4)
(2X-6)/(X-1)(X-5)=(2X-6)/(X-2)(X-4)
(2X-6)[1/(X-1)(X-5)-1/(X-2)(X-4)]=0
(2X-6)[1/(X^2-6X+5)-1/(X^2-6X+8)]=0
因为X^2-6X+5不等于X^2-6X+8
所以1/(X^2-6X+5)-1/(X^2-6X+8)不等于0
所以2X-6=0
X=3
分式方程要检验
经检验,x=3是方程的根