若x²+y²-6y+4x+13=0,则x²-y²=
已知x,y满足x²+y²-4x+6y+13=0则(3x+y)²-(3x+y)(3x-y)的
若x²+y²-6y+4x+13=0,则x²-y²=
若整数 x,y 满足x²+4x+y²-6y+13=0,求x , y的值.
x(x-y)-y(y-x)+(x-y)²因式分解
x²+y²-4x+6y+13=0,求(3x+y)²-3(3x+y)(x+y)-(x-3y)
若整数x,y满足x²+4x+y²-6y+13=0,求x,y的值
若实数X,Y满足X²+Y²+4X-2Y +1=0,则X²-6X+Y²-2Y的最大
已知x-y=1,y≠0,求{(x+2y)²+(2x+y)(x+4y)-3(x+y)(x-y)}÷y的值.
(2x+y)²-y(y+4x)-8x等于?
已知x²+4y²-6x+8y+13=0,求x-y/x+y的值.
已知x²+y²+13-4x+6y=0,求(2x-y)²-2(2x-y)(x+2y)+(x+
x²-4x+y²+6y+13=0,x-y=?