作业帮已知x^2+4y^2-2x-2x+8y+5=0,求x^2-y^2/2x^2+xy-y^2*2y-y/xy-y/(x^2+y^2/y)^2的值
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/28 14:11:31
xQJ0} Y'l(} )zܕ2d
7˰3/ۅ2KU_L}prb.y< C-1̸*i6"TVs´ SMAj7%kSVCʲ[ϒ8u#@4q;! LAf,qTR_ -ϡ)҇m əkd
DNU̒ KѸH TO坜6Ci_÷ty>u4*7HyFxYe2De:
已知x^2+4y^2-2x-2x+8y+5=0,求x^2-y^2/2x^2+xy-y^2*2y-y/xy-y/(x^2+y^2/y)^2的值
已知x^2+4y^2-2x-2x+8y+5=0,求x^2-y^2/2x^2+xy-y^2*2y-y/xy-y/(x^2+y^2/y)^2的值
已知x^2+4y^2-2x-2x+8y+5=0,求x^2-y^2/2x^2+xy-y^2*2y-y/xy-y/(x^2+y^2/y)^2的值
x²+4y²-2x+8y+5=0
(x-1)²+(2y+2)²=0
得 x=1,y=-1
则 x²-y²/2x²+xy-y²*2y-y/xy-y/(x²+y²/y)²
=1-1/2-1+2-1+1/4
=1/2+1/4
=3/4
原题是多打了一个2x吗？。。如果没有那个2x，那么原式可以化为：(x-1)^2+4(y+1)^2=0，然后就x=1 y=-1.
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
已知2y-x=-3,求[4y(2x-y)-2x(2x-y)]/(2x-y
已知x/y=2,求2x(x+y)-y(x+y)/4x²-4xy+y²
已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=?
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
已知x*x+4x+y*y-2y+5=0,则x*x+y*y=?
已知x.x+y.y+8x+6y+25=0,求代数式(x.x-4y.y)/(x.x+4xy+4y.y)-x/(x+2y)的值
已知x^2+4y^2-4x+8y+8=0,求x+y
已知x-2y=2,求4x-y-8分之3x+y-6
已知|5x-y-8|+(7y-x+2)=0则4x+6y
已知2x+2y=-8,4x+y=15求（x-y)^-(3x+2y)^
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
化简(2x/(x+y)-4x/(y-x))/8x(x^2-y^2)得
已知x+y/x=11/8,求x-y/x+2y的值
已知x+y/y=11/8,求x-y/x+2y的值.
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
已知x=3分之一,y=-2分之一,求代数式x-(x+y)+(x+2Y)-(x+3y)+(x+4y)...-(x+2009y)