x²+y²+4x+3y+13=0,算4x+6y
已知x,y满足x²+y²-4x+6y+13=0则(3x+y)²-(3x+y)(3x-y)的
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=?
已知实数x、y满足x²+y²+4x-6y+13=0
化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知x,y满足x²+y²-4x-6y+13=0,求(- y/x^3)^3÷(- 1/xy)^4.(x
已知x²+4y+y²—6y+13=0,求2x+3y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x²+y²-4x-6y+13=0,则3x+4y=
如果x²+y²-4x+6y+13=0,那么2x+3y=()