已知|x+y+2|+x^2y^2-2xy+1=0, 求x^2y+xy^2的值

2025-06-27 20:19:38
推荐回答(1个)
回答1:

|x+y+2|+x^2y^2-2xy+1=0
|x+y+2|+(xy-1)²=0 所以x+y=-2 xy=1
x^2y+xy^2=xy(x+y)=-2