if X upon Y + Y upon x is equal to -1 then what is the value of x cube minus y cube??
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formula of x^3-y^3
(x-y)(x^2+y^2+xy)
x/y+y/x=-1
x^2+y^2+xy=0
then
- (x-y)(x^2+y^2+xy)
- (x-y) -1
y-x
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