｛x+5y-6=0,3x-6y-4=0

若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 已知x,y满足x²+y²-4x+6y+13=0则(3x+y)²-(3x+y)(3x-y)的 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组, 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满足:x平方+y平方-4x+6y+13=0求(3x+y)-3（3x-y)(x+y)-(x-3y)(x+3y)= 已知x*x+y*y-4x-6y+13=0,求3x+4y的值 x平方+y平方-4x-6y+13=0 ,求3x+4y 求解 3x=6y-2 3x-4y=2 6x-3y=-5 4x-9y+1=0 4(2x+y)-5(2x-y)=3 2(2x 已知4x^2+y^2-4x-6y+10=0,求(2\3x根号9x+y^2根号x/y^3)-(x^2-5x根号y\x) 拜 x^2+y^2-4x-6y+13=0,求(2/3根号9x+y^2根号x/y^3)-x^2根号1/x-5x根号y/x)的值