已知实数x y满足(x^2+y^2)(x^2+y^2-2)=3 求x^2+y^2的值 设m=x^2+y^2..然后.
已知实数x,y满足(x+y)^2=1,(x-y)^2=25,求x,y的值
设实数x、y满足方程2x²+3y²=6y,求x+y的最大值
已知实数x,y 满足y=根号(3-x²).试求m=(y+1)/(x+3),b=2x+y的取值范围
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
已知实数x,y满足根号2x-y的值+5x-6=y-根号y-2x,求x,y的值
已知实数x y满足x×x+y×y-xy+2x-y+1=0 试求x y的值
设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y
已知x,y的值满足方程组x+2y=3,x-y=-2,求x/(x-y)²+x²-y²/(x+
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+y²-2x+6y+10=0,求y∧-x.
已知实数X、y满足x的2次方-2x+4y=5求x+2y最大值
已知x、y均为实数,且满足xy+x+y=17,x^2y+y^2x=66,求x^4+x^3y+x^2*y^2+y^3x+y