若x^2+y^2-8x-10y+41=0,求x/y+y/x的值请写我是初一的请用初一的知识解答.的简单一些

若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是（）?(10x-11y)/(x-y) =[(8x-8y)+(2x-3y)]/(x-y) =8为什么8X-8Y=8？(10x-11y)/(x-y)=[(8x-8y)+(2x-3y)]/(x-y)=8+(2x-3y)]/(x-y)=8+0=8 x^2+y^2-8x+10y+41=0求(x+y)^2013 x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 若x+y-8x-10y+41=0,求x／y+y／x的值 x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值 已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=? 若x^2+y^2-6x+8y+25=0 则y/x-x/y的值是 若x^2+y^2-10x-6y+34=0,求（x-y)/(x+y)的值 若x,y为正数,且2*x+8*y-x*y=0,求x+y的最小值 若x^2+2x+y^2-6y+10=0,则x-y 若x^2+y^2-10x+6y+34=0,则x+y=? 若x²+2x+y²-6y+10=0求x y 若x.y满足条件2x+y-12=0,x-4y+10 【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x²+y²-10x+8y-41=0,求（2x-y）²-2（2x-y）（x+2y）+（x+2y）²的值. (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian X^2-Y^2+6X+10Y-30=0 X^2+Y^2-5X-8Y+21=0 X=?Y=?