Question

1/x-3怎么算

Answer 1

/(x-3)=(2-x)/(3-x)，无解
2
1/x-3=(2-x)/(3-x)，即：4x^2-12x+3=0
x=(3±√6)/2
3
1/(x-3)=2-x/(3-x)，即：x-1=2(3-x)
即：x=7/3