x^2+y^2+13=6x-4y,求x^y的值

已知x^2+y^2+13-4x+6y=0,求(2x-y)^2-2(2x-y)(x+2y)+(x+2y)^2 已知：x^2+y^2+4x-6y+13=0,求x^y值. x^2+y^2+4x-6y+13=0,求x^y的值 x^2-4x+y^2-6y+13=0求x,y的值 若x^2+y^2-6x+4y+13=0 求x+y x^2+y^2+13=6x-4y求x^y的值 x^2+y^2+13=6x-4y,求x^y的值 x^2+y^2+13=6x-4y求x^y的值 因式分解 若 x^2+4x+y^2-6y+13=0 求y^x x^2+y^2+6x-4y+13=0求x,y,x^2-y^2的值 化简求值：已知x、y满足：x^2+y^2-4x+6y+13=0 求代数式 的值.(3x+y)^2-3(3x-y)(x+y)-(x-3y)(x+3y)急用！ 已知x²+y²-6x+4y+13=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)²已知x²+y²-6x+4y+13=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)² 已知x、y满足x2+y2-4x+6y+13=0 求代数式（3x+y)2-3(3x-y)(x+y)-(x-3y)(x+3y)已知x、y满足x^2+y^2-4x+6y+13=0 求代数式（3x+y)^2-3(3x-y)(x+y)-(x-3y)(x+3y)的值 如果|X|=4 |Y|=2 且|X+Y|=X+Y 求X+Y x,y 满足x(x-2)-y(y-6)=-10,求x,y的值 1.(x-2y)(x+2y)-(x平方+y)(x平方-y) 2.(2x-y)(y+2x)-(2y+x)(2y-x)3.已知：x+y=6,x平方-y平方=48,求x,y的值4.x平方-2x分之x+2 -- x平方-4x+4分之x-1 求值域 1,y=(x+2)/(x*x+3x+6) 2,y=3x/(x*x+4) 已知x.x+y.y+8x+6y+25=0,求代数式(x.x-4y.y)/(x.x+4xy+4y.y)-x/(x+2y)的值