解方程组:(x+2) (y-2) = xy根号下(x+1)(y+4) + x + 3 = 0 (注:只有(x+1)(y+4)在根号下)

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解方程组:(x+2)(y-2)=xy根号下(x+1)(y+4)+x+3=0(注:只有(x+1)(y+4)在根号下)解方程组:(x+2)(y-2)=xy根号下(x+1)(y+4)+x+3=0(注:只有(

解方程组:(x+2) (y-2) = xy根号下(x+1)(y+4) + x + 3 = 0 (注:只有(x+1)(y+4)在根号下)
解方程组:
(x+2) (y-2) = xy
根号下(x+1)(y+4) + x + 3 = 0 (注:只有(x+1)(y+4)在根号下)

解方程组:(x+2) (y-2) = xy根号下(x+1)(y+4) + x + 3 = 0 (注:只有(x+1)(y+4)在根号下)
(x+2) (y-2) = xy .(1)
根号下(x+1)(y+4) + x + 3 = 0 .(2)
解(1)得
xy-2x+2y-4=xy
y=x+2 代入(2)中
根号(x+1)(x+6)=-(x+3)〉=0
(x+1)(x+6)>=0
x>=-1或x