已知实数x,y满足(x-y+6)*(x+y-6)大于等于零,且x大于等于1小于等于4,则x^2+y^2-2的取值范围是?

已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 已知实数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x²+y²+4x-6y+13=0 已知实数X,Y满足2 已知实数xy满足x+2y 已知实数x、y满足-1 已知实数x,y满足：1 已知实数x、y满足-4 已知实数xy满足 x+y-2 已知实数x,y满足-4 已知实数x,y满足{x=>0,y 已知实数x,y满足{x=>0,y 已知实数x.y满足(x+2)^2+y^2( 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2x+5y>=10;2x-3y>-6;2x+y 实数x,y满足:｜x+y｜