写好拍下来给我吧
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 15:06:54
写好拍下来给我吧
写好拍下来给我吧
写好拍下来给我吧
2x^2y^2-5xy+1=2(x^2y^2-5/2xy+1/2)=2[x^2y^2-5/2xy+(5/4)^2-(5/4)^2+1/2]=2[(xy-5/4)^2-(√17/4)^2]=2[xy-(5-√17)/4]*[xy-(5+√17)/4]
写好拍下来给我吧
写好拍下来给我吧
写好拍下来给我吧
2x^2y^2-5xy+1=2(x^2y^2-5/2xy+1/2)=2[x^2y^2-5/2xy+(5/4)^2-(5/4)^2+1/2]=2[(xy-5/4)^2-(√17/4)^2]=2[xy-(5-√17)/4]*[xy-(5+√17)/4]