(x+y)^+|3-y|=0,求x-y/xy的值(^代表平方)
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(x+y)^+|3-y|=0,求x-y/xy的值(^代表平方)
(x+y)^+|3-y|=0,求x-y/xy的值(^代表平方)
(x+y)^+|3-y|=0,求x-y/xy的值(^代表平方)
(x+y)^+|3-y|=0
得到x+y=0,3-y=0
得到x=-3,y=3
所以x-y=-6,xy=-9
所以:x-y/xy=2/3
(x+y)^+|3-y|=0
(x+y)^=0
|3-y|=0
3-y=0
y=3
x+y=0
x=-y
x=-3
x-y/xy=(-3-3)/3*(-3)=2/3
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