9.若x²+xy=2,xy+y²=-1,则x²+2xy+y²的值为_____________.

来源：学生作业帮助网编辑：六六作业网时间：2024/12/18 21:57:39

9.若x²+xy=2,xy+y²=-1,则x²+2xy+y²的值为_____________.9.若x²+xy=2,xy+y²=-1,则x&

9.若x²+xy=2,xy+y²=-1,则x²+2xy+y²的值为_____________.
9.若x²+xy=2,xy+y²=-1,则x²+2xy+y²的值为_____________.

9.若x²+xy=2,xy+y²=-1,则x²+2xy+y²的值为_____________.
1