x2+4x+y2-6y+13=0 xy等于几?x2+=x的二次方x2+4x+y2-6y+13=0 则（2y)(x-2y)=?

来源：学生作业帮助网编辑：作业帮时间：2024/05/02 17:41:46

x2+4x+y2-6y+13=0 xy等于几?x2+=x的二次方x2+4x+y2-6y+13=0 则（2y)(x-2y)=?
x2+4x+y2-6y+13=0 xy等于几?
x2+=x的二次方
x2+4x+y2-6y+13=0 则（2y)(x-2y)=?

x2+4x+y2-6y+13=0 xy等于几?x2+=x的二次方x2+4x+y2-6y+13=0 则（2y)(x-2y)=?
x2+4x+y2-6y+13=0
(x+2)^2+(y-3)^2=0
x+2=0 y-3=0
x=-2 y=3
xy=-2*3=-6
(2y)(x-2y)
=-2*2*(-2-6)
=-2*2*(-8)
=32

x2+y2-4x-6y+13=0求分式y2-x2*xy*是除号 2是平方 x2-2xy+y2=4 x2+y2-x-y=6 解不等式x2-2xy+y2=4 x2+y2-x-y=6 解不等式已知x2+4y2+x2y2+1=6xy,则(x4-y4)/(2x2+xy-y2)*(2x-y)/(xy-y2)/(x2+y2/y)2= X2+Y2+8X+6Y+25=0 求代数式(x2-4y2/x2+4xy+4y2)-x/x+2y 已知X2+Y2+8X+6Y+25=0 求代数式X2++XY+4Y2分之X2-4Y2 减X+2Y分之X的值已知x2+y2+4x-6y+13=0那么xy=? 已知x2+y2+6x-4y+13=0,求xy的值若X2+Y2-2X-6Y+10=0 ,求（x2-y2)/xy的值已知x2+y2+4x-2y+5=0,求x2+2xy+y2值已知x2+4y2+x2y2-6xy+1=0,求 x4-y4/2x-y 乘 2xy-y2/xy-y2 除以（x2+y2/xy）2乘1/x+y的值若X2 +y2 -4x-6y= -13 求分式x2-2y2/2xy的值 x2+y2-6x-8y+25=0,求分式4y2-x2/4xy-x2-4y2的值 x2+4x+y2-6y+13=0 xy等于几?x2+=x的二次方x2+4x+y2-6y+13=0 则（2y)(x-2y)=? 解方程组｛3x2-y2=8 {4x2+12xy+9y2=1 {x2+2xy+y2-4=0 x2+xy+y2=4 4x2-9y2=0 x2-2xy+y2-1=0还有{x2+y2=4xy-y2+4=0x2-----x的平方 y2------y的平方还有{2x-3y=12x2-3xy+y2-4x+3y-3=0 已知X2-2x+y2+6y+10=0,求（x2-2xy）/(xy+y2)的值 (x+√(x2+2011))(y+(√y2+2011))=2011,x2-3xy-4y2-6x-6y+58 已知x2-3xy-4y2的绝对值+2倍根号x2+4xy+4y2-1=0 求3x+6y的值已知x2-4x+y2-6y+13=0求x2+y2的值?