已知x,y满足 |x+2|+（x+3y+5）²=0.求（-2xy）²（-y）²·6xy²的值

已知x,y满足y 已知实数x,y满足约束条件x+y>3,y 已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 已知X和Y满足3X+4Y=2,X-Y-1/7 已知x和y满足3x+4y=2,x-y 已知x=3y+2,且满足4y 已知x=3y+2,且满足4y 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x,y满足约束条件 2x+5y>=10 2x-3y>=-6 2x+y 已知x,y满足约束条件{2x+5y>=10,2x-3y>=-6,2x+y 已知实数x,y满足2x+5y>=10;2x-3y>-6;2x+y 已知X,Y满足|X-Y-1|+（X+Y-3)^2=0求X,Y的值 已知实数x.y满足(x+2)^2+y^2( 已知圆x,y满足x^2+y^2 已知x,y满足条件5x+3y 已知x,y满足x+y-2>=0,2x-y+2>=0,x 已知x,y满足约束条件：x-y+1>=0,x+y-2>=0,x