(X+2Y-2)(3X+2Y+2)+2(XX+4)=0
问题描述：
(X+2Y-2)(3X+2Y+2)+2(XX+4)=0
求X= Y=
答
原式＝3X²+2XY+2X+6XY+4Y²+4Y-6X-4Y-4+2X²+8=05X²+8XY-4X+4Y²+4=0X²+4X²+8XY-4X+4Y²+4=0(X²-4X+4)+(4X²+8XY+4Y²)=0(X-2)²+(2X+2Y)²=0∵(X-2)&sup...