若x^2+y^2+2x+10=6y,则y^x等于?

若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 若x^2+y^2+2x+10=6y,则y^x等于? 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f(x+y,y/x)=x^2-y^2,则F(X,Y)= x,y 满足x(x-2)-y(y-6)=-10,求x,y的值 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 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 若x^2+y^2-10x-6y+34=0,求（x-y)/(x+y)的值 若x^2+y^2-6x+8y+25=0 则y/x-x/y的值是 若5x+3y=3x+4y=x+2y+6,则x+y=___ 若X+Y=6,X^2-Y^2=42,则X-Y=? 若x-y=6,x^2-y^2=24,则x+y=? 若x^2-y^2=6 x+y=3 则x-y=多少 已知x^2+y^2-2x+6y+10,则x+y=? 若2x+2y=6x-3y,则x比y= 若x/2=y/3,且x+y=10,则x=?y=?