分解因式:1-x^2-y^2+x^2y^2-4xy=
分解因式:1-x^2-y^2+x^2y^2-4xy=
分解因式:1-x^2-y^2+x^2y^2-4xy=
分解因式:1-x^2-y^2+x^2y^2-4xy=
1-x^2-y^2+x^2y^2-4xy
=x²y²-2xy+1-x²-2xy-y²
=(xy-1)²-(x+y)²
=(xy-1+x+y)(xy-1-x-y)
1-x²-y²+x²y²-4xy=-(x²+2xy+y²)+x²y²-2xy+1=-(x+y)²+(xy-1)²=(xy-1)²-(x+y)²=(xy-1-x-y)(xy-1+x+y)=(xy-x-y-1)(xy+x+y-1)
呀,高几的题目初一那么^是什么x^2就是x的二次方好像高中也有这样的符号,是不是是吗不知道其实你这题目好简单的💔你是说我笨吗不是呀,你没好好学谁说的我最近脑子有点不好使说话真不客气难怪采纳率为0嘻嘻我是新手活该算了饶你一次嘻嘻就会笑你敢会点别的吗