∵(2x-y+1)²大于等于0 |5x-2y-3|大于等于0 (2x-y+1)的二次方+|5x-2y-3|=0
∴(2x-y+1)²=0 |5x-2y-3|=0
由题意得：2x-y+1=0
5x-2y-3=0
解得x=1,y=1