已知实数X,Y满足(X+1)^2+(Y-2)^2=16,求3X+4Y的最值

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-1 已知实数x,y满足：1 已知实数X,Y满足2 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知实数x,y满足y=|x-1|,则x+2y的最大值是 已知实数x,y满足y=|x-1|若x+2y 已知实数x.y满足(x+2)^2+y^2( 已知实数x,y满足：y 已知实数x,y满足x-ay-1>=0,2x+y>=0,x 已知实数x,y满足(x+y)^2=1,(x-y)^2=25,求x,y的值 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y=x^2-2x+2(-1 已知实数x,y满足约束条件x+y>3,y 已知正实数x,y满足x+2y=2.则y/2x+1/y的最小值是 已知实数x,y满足根号(x-1)+y^2=4y-4,求(x-y)^2012的值