已知(2x+3y-18)^2+|4x+5y-32|=0,则4x-3y=

已知x*x+4x+y*y-2y+5=0,则x*x+y*y=? 已知(2x+3y-18)^2+|4x+5y-32|=0,则4x-3y= 已知(2x+3y-18)+|4x+5y+32|=0,则4x-3y等于? 已知x=1/3,y=-1/2,求代数式x-(x+y)+(x+2y)-(x+3y)+(x+4y)-(x+5y)+...-( 已知x,y>0 2x+y+3=xy 求5x+4y最小值 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 已知3x^2+xy-2y^2=0,求{(x+y)/(x-y)+4xy/(y^2-x^2)}/{(x+3y)*(x-y)} 已知X,Y,满足(X+3Y)(X-3Y)=-10(Y^2-6/5)和2X(Y-1)+4(1/2X-1)=0 已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值. 已知x,y为实数,根号3x+4 +y^2-6Y+9=0则x+y=? 已知x-2y/2x+3y=3/4,则x：y= 已知x²+4x+y²-2y+5=0,则x+y=