已知实数x、y满足x²+y²+4x-6y+13=0

已知实数x、y满足x²+y²+4x-6y+13=0 已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x. 已知实数x、y满足关系式x²+y²-6x-4y+12=0 已知x,y满足x²+y²-4x+6y+13=0则(3x+y)²-(3x+y)(3x-y)的 已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y 已知实数x,y满足x²+y²-6x-4y+12=0,求x-y的最大值与最小值 已知实数x,Y满足x2+y2+4x-6y+13=0,则x(-Y)= 已知:实数x、y满足x2+y2-4x-6y+13=0则y的x次方= 已知实数xy满足x^2+y^2-6x+4y+13=0求x^y的值 已知实数x y满足x²+y²+2x-4y+1=0 求下列最大值和最小值,(1)y/x-4 (2)2x 已知实数X、Y满足X²+4y²+2x-4y+2=0 求X的2y次方+2x的值 已知实数x,y,z满足x²-6xy+10y²+4y+|z²-3z+2|+4=0,求(x+y