4x2;+y2;-5x-4y+5=0,则x÷y—y÷x=

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4x2;+y2;-5x-4y+5=0,则x÷y—y÷x=4x2;+y2;-5x-4y+5=0,则x÷y—y÷x=4x2;+y2;-5x-4y+5=0,则x÷y—y÷x=4x²+y²

4x2;+y2;-5x-4y+5=0,则x÷y—y÷x=
4x2;+y2;-5x-4y+5=0,则x÷y—y÷x=

4x2;+y2;-5x-4y+5=0,则x÷y—y÷x=
4x²+y²-4x-4y+5=0
(4x²-4x+1)+(y²-4y+4)=0
(2x-1)²+(y-2)²=0
2x-1=0 y-2=0
x=1/2 y=2
x÷y—y÷x=1/4-4=-15/4

如题：若4x=5y(y≠0),则x2-y2/y2=?. 已知x2+y2+4x-2y+5=0,求x2+2xy+y2值 4、已知x/y=4/5,则(X2+Y2)/(X2-Y2)=( ) X2是x的平方,/是分数线 x2+y2+2x-4y+5=0 已知x2+4y+y2+2y+5=0,则x的y次方=? 若x2+y2-2x+4y+5=0 则x= y= 若X2+4Y2+2X-4Y+2=0 求X2+5Y2的平方根若x2+4y2+2x-4Y+2=0,求5x2+16y2的算数平方根. 4x2;+y2;-5x-4y+5=0,则x÷y—y÷x= 已知4X2+y2-4x-4y+5=0,则X/Y-Y/X=? 已知x2+y2+2x-4y+5=0,x,y为实数,则x,y分别等于多少已知实数x,y满足x2+y2-2x+4y=0,则x2+y2的最小值是 x2+y2-4x+4y+4=0和x-y-5=0联立方程, 已知x2+4y2-4x-4y+5=0,求x-y的值, X2+4x+y2-2y+5=0 求x+2y的值已知实数x,y满足x2+y2+2x-4y+5=0 已知x2+y2+4x-2y+5=0,则3x-2y -2的值是解方程组x2+y2-4x-3y+5=0,3x2+3y2-11x-7y+10=0要清晰完整的过程