若x^2+y^2-2x+6y+10=0,则(x+y)^5=?

若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 若3x-5y=0,则x+y/x=（）,x-y/y=（）,2x-3y/2x+3y=( ) 设x>1,y>0,若x^y+x^-y=2根号2,则x^y-x^-y等于 已知x*x+4x+y*y-2y+5=0,则x*x+y*y=? 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 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* 若5x+3y=3x+4y=x+2y+6,则x+y=___ 若7x+10y分之5x+y=1/2,则x/y= 7.X*X+2X+Y*Y-6Y+10=0,则xy=? 已知：x²y²-2x+6y+10=0则x+y= x²-2x+y²+6y+10=0,则x+y=? 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5