来自冯小年的问题
若(x+y)2+|2y-1|=0,则xy-[2xy-3(xy-1)]的值是___.
若(x+y)2+|2y-1|=0,则xy-[2xy-3(xy-1)]的值是___.
1回答
2020-07-29 19:18
若(x+y)2+|2y-1|=0,则xy-[2xy-3(xy-1)]的值是___.
若(x+y)2+|2y-1|=0,则xy-[2xy-3(xy-1)]的值是___.
根据题意得:
x+y=02y-1=0