|x-y+1|与|x+y-2013|互为相反数,求(x- y)(x+y)的值|x-y+1|与|x+y-2013|互为相反数,求(x-y)(x+y)的值

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|x-y+1|与|x+y-2013|互为相反数,求(x- y)(x+y)的值|x-y+1|与|x+y-2013|互为相反数,求(x-y)(x+y)的值
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|x-y+1|与|x+y-2013|互为相反数,求(x- y)(x+y)的值|x-y+1|与|x+y-2013|互为相反数,求(x-y)(x+y)的值
|x-y+1|与|x+y-2013|互为相反数,求(x- y)(x+y)的值
|x-y+1|与|x+y-2013|互为相反数,求(x-
y)(x+y)的值

|x-y+1|与|x+y-2013|互为相反数,求(x- y)(x+y)的值|x-y+1|与|x+y-2013|互为相反数,求(x-y)(x+y)的值
由题意得:
x-y+1=0,x+y-2013=0
则x-y=-1,x+y=2013
所以(x-y)(x+y)=(-1)X2013=-2013
希望我的回答能帮助你,
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