解方程,x / x-1 +5x-1=1 怎么解
问题描述:
解方程,x / x-1 +5x-1=1 怎么解
答
x / x-1 +5x-1=1
x+5x(x-1)-(x-1)=x-1
x+5x²-5x=0
5x=4
x=5/4
答
x/(x-1)+5x-1=1
x+(5x-1)(x-1)=x-1
5x^2-6x+1=-1
5x^2-6x+2=0
△=36-40=-4<0
所以此方程无解.