Question

解方程|2x-5|-|x+2|=0,︱x-4︱+︱x-3︱=2

Answer 1

|2x-5|-|x+2|=0

|2x-5|=|x+2|

2x-5=x+2或2x-5=-x-2

即x=7或x=1

︱x-4︱+︱x-3︱=2

当x>=4时

x-4+x-3=2解得x=4.5

当4>x>=3时

4-x+x-3=2无解

当x