题目若实数xxx,yyy满足(x+y)(x+y−3)+2=0\left(x+y\right)\left(x+y-3\right)+2=0(x+y)(x+y−3)+2=0,则x+yx+yx+y的值为（ ）A.−1-1−1或−2-2−2B.−1-1−1或222C.111或−2-2−2D.111或222知识点：等式的性质章节：方程与不等式 / 一元一次方程
