1题：已知实数x,y满足丨x-√y丨+ √x3-27 = 0 ,求(y-5)的x次方的值.2题：（x+√2）² ＝3

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：y 已知实数x,y,满足x-√x-1=√y+3-y,则x+y最大值是? 已知实数x,y满足约束条件x+y>3,y 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-4 已知实数xy满足 x+y-2 已知实数x,y满足-4 已知正实数x,y满足(x-1)(y+1)=16,x+y最小值是 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满足丨x-5丨+(y+4)²=0球(x+y)2012平方 1题：已知实数x,y满足丨x-√y丨+ √x3-27 = 0 ,求(y-5)的x次方的值.2题：（x+√2）² ＝3 已知实数x,y满足√x-2 + （y+1）²=0,则x-y=多少?