Question

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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Answer 1

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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