若x,y满足|x-y+1|+(x+y+3)^2=0则x^2-y^2=

若x,y满足y 若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 设变量x,y满足约束条件x-y>-1,x+y>1,3x-y 变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y 若x,y 满足条件{x>=1 y>=1 x+y-3 感激不尽1.x,y满足(x-y-1)(x+y) 若x,y满足|2x-y-3|+|3x+2y+1|=0,则x= y= 若实数x,y满足不等式x-y>=-1,x+y>=1,3x-y 若实数x,y满足不等式x-y>=-1,x+y>=1,3x-y 若x,y满足|x-y+1|+(x+y+3)^2=0则x^2-y^2= 若x,y满足约束条件,x>=0,y>=0,x-y>=-1,3x+4y 若x,y为正整数,且满足3x(x+y)-y(x+y)=7,求x,y 若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值 设x.y满足条件y>=0.X-Y+1>=0.x+y-3 若实数x,y满足x-y+1》=0,x+y>=0,x 若实数x,y满足x-y+1>=0,x+y>=0,x 若x＞1,y＞0,且满足 xy=x^y,x/y大于等于x^3y,则y则 最大值求y 的最大值 已知x,y满足y