若分式x+1分之3x+5无意义,化简分式4m-2x分之5-2m-x分之1
问题描述:
若分式x+1分之3x+5无意义,化简分式4m-2x分之5-2m-x分之1
答
无意义则分母x+1=0
x=-1
所以原式=5/(4m+2)-1/(2m+1)
=(5-2)/(4m+1)
=3/(4m+1)